Assembly Parts - Purchase Partners

Create A Turnkey Environment 

Purchase Partners can save you time and money by custom 

packaging and labeling your parts to fit your special needs. 

Whether it is 

• Hardware Kitting in Poly-Bags, 

• Special Corrugated Packaging 

• Bar Coding or Product Labeling 

Our business is dedicated to making your job easier 

Purchase Partners operates three automated packaging centers that create 

hardware kits by opening, indexing, and counting multiple parts in one poly-bag. 

Each poly bag can be customized with your logo, part number, description, bar 

code, etc. to take you one step closer to a complete turnkey purchase. 

Purchase Partners also operates two conveyor lines that are utilized in Special 

Corrugated Packaging requirements. Here we can place customized labels on 

corrugated cartons to meet your every specification, palletize your material on 

specific skid sizes to meet your pallet racking specifications, and even drop ship 

your product directly to your customer to streamline the supply chain. 

Our goal is to mainstream the procurement process as much 

as possible and to afford your company every advantage in 

your competitive marketplace. 

2369 Schuetz Road Saint Louis, Missouri 63146 

(314) 567-8585 (314) 567-7334 Fax 

www.purchasepartners.com

HARDWARE BAGS AND KITS 

CONSOLIDATE YOUR PURCHASES 

INTO ONE “TURNKEY” ORDER 

17 to 3 

CUT YOUR COSTS AND TIME DRAMATICALLY 

NORMAL ORDER You currently purchase 

four items from two separate suppliers (2), purchase 

poly-bags or corrugated for packaging (1), 

receive in three separate shipments (3), account 

for five separate item requirements through 

computer generated receivings (5), issue all 

items to production or a staging area (1), arrange 

for the plant to consolidate the hardware 

into one assembled kit and produce the kit (1), 

return the left-over excess inventory to stock 

(1), pay three separate invoices (3). 

TURNKEY ORDER Issue purchase order 

for completed assembled item, receive one item, 

pay one invoice. 

17 to 3 

SEVENTEEN STEPS TO COMPLE- 

TION REDUCED TO THREE STEPS 

AND A SIGNIFICANTLY LOWER 

COST 17 to 3 

Phone: 314-567-8585800-787-2200 Fax: 314-567-7334 Email:sales@purchasepartners.com

Assembly Parts 

Woodruff Keys, Keystock, Drill Rod, Taper Pins, 

Drive Pins, Roll Pins, Precision Screws 

Woodruff Keys 

Machined from 1035 steel our Woodruff Keys (Half 

Moon Keys) are available from stock in 50 S.A.E. standard 

sizes. Special sizes and materials such as alloy 

steel (A-8630) are available on special order. 

Description 

(W X L) 

Key No. U.S.A. Std. No. Alloy Part 

Number 

Stainless Steel 

Part Number 

Weight Per 100 

1/16" x 1/4" 201 202 0.04 

3/32" x 5/16" 207 302.5 0.09 

1/16" x 3/8" 211 203 0.09 

3/32" x 3/8" 212 303 10-654 0.13 

1/8" x 3/8" 213 403 10-655 0.15 

1/16" x 1/2" 1 204 10-601 10-SS01 0.13 

3/32" x 1/2" 2 304 10-602 10-SS02 0.19 

1/8" x 1/2" 3 404 10-603 10-SS03 0.25 

3/32" x 5/8" 4 305 10-604 0.3 

1/8" x 5/8" 5 405 10-605 10-SS05 0.39 

5/32" x 5/8" 6 505 10-606 10-SS06 0.49 

3/16" x 5/8" 61 605 10-SS07 0.58 

1/8" x 3/4" 7 406 10-608 10-SS08 0.61 

5/32" x 3/4" 8 506 10-609 10-SS09 0.75 

3/16" x 3/4" 9 606 10-610 10-SS10 0.9 

1/4" x 3/4" 91 806 10-611 10-SS11 1.2 

5/32" x 7/8" 10 507 1.1 

3/16" x 7/8" 11 607 10-613 10-SS13 1.3 

7/32" x 7/8" 12 707 1.5 

1/4" x 7/8" A 807 10-615 10-SS15 1.7 

1/4" x 15/16" 141 - 2 

3/16" x 1" 13 608 1.7 

7/32" x 1" 14 708 2 

1/4" x 1" 15 808 10-619 10-SS19 2.3 

5/16" x 1" B 1008 10-620 2.9 

3/8" x 1" 152 1208 3.6 

3/16" x 1-1/8" 16 609 2.2 

7/32" x 1-1/8" 17 709 2.5 

1/4" x 1-1/8" 18 809 10-624 2.9 

Phone 314/567-8585 Fax 314/567-7334 


5/16" x 1-1/8" C 1009 10-625 3.6 

3/16" x 1-1/4" 19 610 10-626 2.7 

7/32" x 1-1/4" 20 710 3.2 

1/4" x 1-1/4" 21 810 10-628 3.6 

5/16" x 1-1/4" D 1010 10-629 4.5 

3/8" x 1-1/4" E 1210 10-630 5.4 

1/4" x 1-3/8" 22 811 4.3 

5/16" x 1-3/8" 23 1011 5.4 

3/8" x 1-3/8" F 1211 10-633 6.5 

1/4" x 1-1/2" 24 812 5 

5/16" x 1-1/2" 25 1012 6.3 

3/8" x 1-1/2" G 1212 10-636 7.5 

3/16" x 2-1/8" 126 617-1 2.3 

1/4" x 2-1/8" 127 817-1 3.1 

5/16" x 2-1/8" 128 1017-1 3.9 

3/8" x 2-1/8" 129 1217-1 4.7 

3/16" x 2-1/8" 26 617 3.6 

1/4" x 2-1/8" 27 817 10-638 4.8 

5/16" x 2-1/8" 28 1017 6 

3/8" x 2-1/8" 29 1217 7.2 

1/4" x 2-3/4" RX 822-1 6.4 

5/16" x 2-3/4" SX 1022 7.99 

3/8" x 2-3/4" TX 1222-1 9.6 

1/2" x 2-3/4" VX 1622-1 10-647 12.9 

Machinery Keys 

Cut to YOUR specifications, ready to use. 

Quality standard machinery keys eliminate the labor and cost of cutting and filing 

key stock or bar stock to size. Quality keys are sized, ready for use. Available in 

thousands of sizes, precut and finished from square, rectangular and metric stock. 

To order machinery keys, specify the Product Code for the type of key, size and 

material. Tolerances other than standard, will be subject to special grinding 

charges. Please note that plating will increase dimensions by a minimum of .0005 

inch. Since all machinery keys are manufactured according to customer specifications, 

please contact us for current pricing. 

Both ends square 

Length Tolerance +.000 - .030 

One end round 


Both ends round 


Call our customer service desk for more information 

on Drill Rod, Taper Pins, Drive Pins, Roll 

Pins, Precision Screws.

Bolts and Cap 

Screws 

STANDARD HEX HEAD CAPSCREWS 

• GRADES 2, 5, 8 and A307A 

METRIC STANDARD HEX HEAD CAPSCREWS 

• GRADES 8.8 and 10.9 

BOLTS AND CAP SCREWS 

ASTM A325 STRUCTURAL BOLTS 

• AVAILABLE IN TYPE I AND TYPE III (WEATHERING 

STEEL). 

• A325-T FULL THREAD TYPE I ONLY. 

• AVAILABLE IN BLACK, MECHANICAL GALVANIZED AND 

HOT DIP GALVANIZED. 

ASTM A325M (METRIC) STRUCTURAL BOLTS 

• AVAILABLE IN BLACK, MECHANICAL GALVANIZED AND 

HOT DIP GALVANIZED. 

ASTM A490 STRUCTURAL BOLTS 

• AVAILABLE BLACK ONLY IN DIAMETERS 5/8" THROUGH 

1-1/4". 

ASTM A194 & A563 HEAVY HEX STRUCTURAL NUTS 

• AVAILABLE HEAVY HEX NUTS IN GRADES C, DH, C3, 

DH3 AND 2H. 

• STANDARD FINISH IS BLACK; MECHANICAL GALVA- 

NIZED AND HOT DIPPED GALVANIZED AVAILABLE ON 

A563 GRADE DH ONLY. 

ASTM A563M (METRIC) HEAVY HEX STRUCTURAL NUTS 

• AVAILABLE IN GRADE 10S. 

• AVAILABLE IN BLACK, MECHANICAL GALVANIZED, AND 

HOT DIPPED GALVANIZED. 

ASTM A325 TRU-TENSION ASSEMBLIES 

• TRU-TENSION BOLT ASSEMBLIES AVAILABLE WITH 

ONE A563 GRDH HEX NUT AND ONE F436 HARD 

ROUND WASHER. 

• AVAILABLE IN DIAMETERS 3/4", 7/8", 1", AND 1 1/8". 

• AVAILABLE IN BLACK. 


Ph. (314) 567-8585 Fax (314) 567-7334

Cap Screws & Bolts 

Purchase Partners 

Head and Thread Dimensions 

Hex Cap 

Screws 

H 

J 

H 

J 

F 

E 

E 

G 

o 

30 

+0 

-15 

Y 

‡ 

L 

Cut Thread 

L T 

o 

30 

+0 

-15 

Y 

L T 

‡ 

L 

Rolled Thread 

UNDERSIDE OF HEAD 

‡Length of a cap screw is measured from the underhead bearing surface to the extreme end of the screw. 

HEX CAP SCREWS 

ASME B18.2.1- 

1996 

E F G H J L T 

Y 

Nominal or 

Basic Product 

Diameter 

Body Diameter 

Width Across Flats 

Width 

Across 

Corners 

Head Height 

Wrenching 

Height 

Thread Length 

For 

Screw 

Lengths 

≤6 in. 

For 

Screw 

Lengths 

> 6 in. 

Transition 

Thread 

Length 

Max Min Basic Max Min Max Min Basic Max Min Min Ref Ref Max 

1/4 0.2500 0.2500 0.2450 7/16 0.438 0.428 0.505 0.488 5/32 0.163 0.150 0.106 0.750 1.000 0.250 

5/16 0.3125 0.3125 0.3065 1/2 0.500 0.489 0.577 0.557 13/64 0.211 .0195 0.140 0.875 1.125 0.278 

3/8 0.3750 0.3750 0.3690 9/16 0.562 0.551 0.650 0.628 15/64 0.243 0.226 0.160 1.000 1.250 0.312 

7/16 0.4375 0.4375 0.4305 5/8 0.625 0.612 0.722 0.698 9/32 0.291 0.272 0.195 1.125 1.375 0.357 

1/2 0.5000 0.5000 0.4930 3/4 0.750 0.736 0.866 0.840 5/16 0.323 0.302 0.215 1.250 1.500 0.385 

9/16 0.5625 0.5625 0.5545 13/16 0.812 0.798 0.938 0.910 23/64 0.371 0.348 0.250 1.375 1.625 0.417 

5/8 0.6250 0.6250 0.6170 15/16 0.938 0.922 1.083 1.051 25/64 0.403 0.378 0.269 1.500 1.750 0.455 

3/4 0.7500 0.7500 0.7410 1-1/8 1.125 1.100 1.299 1.254 15/32 0.483 0.455 0.324 1.750 2.000 0.500 

7/8 0.8750 0.8750 0.8660 1-5/16 1.312 1.285 1.516 1.465 35/64 0.563 0.531 0.378 2.000 2.250 0.556 

1 1.0000 1.0000 0.9900 1-1/2 1.500 1.469 1.732 1.675 39/64 0.627 0.591 0.416 2.250 2.500 0.625 

1-1/8 1.1250 1.1250 1.1140 1-11/16 1.688 1.631 1.949 1.859 11/16 0.718 0.658 0.461 2.500 2.750 0.714 

1-1/4 1.2500 1.2500 1.2390 1-7/8 1.875 1.812 2.165 2.066 25/32 0.813 0.749 0.530 2.750 3.000 0.714 

1-1/2 1.5000 1.5000 1.4880 2-1/4 2.250 2.175 2.598 2.480 1-5/16 0.974 0.902 0.640 3.250 3.500 0.833 

Nominal 

Screw Size 

Up to 1 in., 

incl. 

Over 1 in. to 

2-1/2 in., incl. 

Nominal Screw Length 

Over 2-1/2 in. 

to 4 in., incl. 

Over 4 in. to 

6 in., incl. 

Longer than 6 in. 

Tolerance on Length 

1/4 to 3/8 -0.03 -0.04 -0.06 -0.10 -0.18 

7/16 and 1/2 -0.03 -0.06 -0.08 -0.10 -0.18 

9/16 to 3/4 -0.03 -0.08 -0.10 -0.10 -0.18 

7/8 and 1 .... -0.10 -0.14 -0.16 -0.20 

1-1/8 to 1-1/2 .... -0.12 -0.16 -0.18 -0.22

Hex Cap Screws, Gr-2, 

18-8 & 316 Stainless 

Mechanical & 

Bolts & Cap Screws 

Performance Data 

GRADE-2 HEX CAP SCREW 

x 

** 

Description 

Applications/ 

Advantages 

Material 

Hardness 

Proof Load 

Yield Strength* 

Tensile Strength 

Elongation* 

Reduction of Area* 

Plating 

A low or medium carbon steel, externally threaded mechanical device 1/4" diameter or larger, with a trimmed hex head and a 

washer face on the bearing surface. 

Economical for use in non-critical applications where the fastener is not subject to extreme temperatures or stress beyond the limits 

listed herein. 

AISI 1006 - 1050 or equivalent steel. 

1/4 through 3/4 in. diameter, 6 in. and shorter in length: Rockwell B80 - B100. 

1/4 through 3/4 in. diameter, over 6 in. in length: Rockwell B70 - B100. 

7/8 through 1-1/2 in. diameter, all lengths: Rockwell B70 - B100. 

1/4 through 3/4 in. diameter, 6 in. and shorter in length: 55,000 psi. 

1/4 through 3/4 in. diameter, over 6 in. in length: 33,000 psi. 

7/8 through 1-1/2 in. diameter, all lengths: 33,000 psi. 

1/4 through 3/4 in. diameter, 6 in. and shorter in length: 57,000 psi. minimum. 

1/4 through 3/4 in. diameter, over 6 in. in length: 36,000 psi. minimum. 

7/8 through 1-1/2 in. diameter, all lengths: 36,000 psi. minimum. 

1/4 through 3/4 in. diameter, 6 in. and shorter in length: 74,000 psi. minimum. 

1/4 through 3/4 in. diameter, over 6 in. in length: 60,000 psi. minimum. 

7/8 through 1-1/2 in. diameter, all lengths: 60,000 psi. minimum. 

18% minimum (all diameters) 

35% minimum (all sizes) 

See Appendix-A for plating information 

x 

F5 9 3-C 

** 

HEX CAP SCREW--STAINLESS STEEL, 18-8 & 316 

x 

F5 9 3-G 

** 

Description 

Applications/ 

Advantages 

Material 

Heat Treatment 

Hardness 



Elongation in 4D* 

18-8 and 316 stainless steel cap screws are both made from austenitic alloys as described below. 

18-8: Used in products that require general atmospheric corrosion resistance, such as chemical and food-processing equipment. 

Some chemical environments may require special corrosion resistant materials and precautions. 

316: The molybdenum content gives this type of stainless even greater corrosion resistance than 18-8 as well as superior strength 

at high temperatures. 

18-8: A cap screw made from one of the following austenitic alloys: 303, 303Se, 304, XM7, all of which are characterized as having 

a chromium content of 17-19% and nickel content of 8-10%. 

316: A cap screw made from 316 stainless steel, an austenitic alloy which differs from 18-8 by its molybdenum content (2-3%) and 

a higher nickel content (10-14%). 

The austenitic alloys develop their strength through work hardening during the fastener manufacturing process, as seen from the 

hardness properties below. The only heat treatment normally available on austenitic stainless alloys is annealing, which is done at 

approximately 1900°F to a dead soft condition and is not normally thermally reversible. 

1/4 through 5/8 in. diameter: Rockwell B95 - C32 

3/4 through 1 in. diameter: Rockwell B80 - C32 

1/4 through 5/8 in. diameter, 2.25D and longer: 65,000 psi. minimum 

3/4" (2.25D & longer) & 7/8 through 1 in. diameter (3D & longer): 45,000 psi. minimum 

1/4 through 5/8 in. diameter, 2.25D and longer: 100,000 - 150,000 psi. 

3/4" (2.25D & longer) & 7/8 through 1 in. diameter (3D & longer): 85,000 - 140,000 psi. 

1/4 through 5/8 in. diameter: 20% minimum; 3/4 through 1 in. diameter: 25% minimum. 

D = Nominal diameter of the screw in inches 

*These properties are tested only on machined specimens when the testing machine cannot provide for full testing of the parts. 

**Product standards require the manufacturer’s head marking to appear on the top of all cap screws 1/4” diameter and larger. “X” represents one location such a marking may appear.

Grades 5 & 8 

Cap Screws 

Description 

Applications/ 

Advantages 


Material 

Core Hardness 

Surface Hardness 

Proof Load 



Elongation* 


Plating 

Mechanical & 

Performance Data 


A cap screw made from medium carbon steel and heat-treated. 

Bolts & Cap Screws 

Has greater tensile strength than a Grade-2. Yield-to-tensile ratio is the lowest of all heat treated steels. 

Grade-5 cap screws shall be heat treated, oil or water quenched, at the option of the manufacturer, and tempered at a minimum 

tempering temperature of 800°F. 

Medium carbon steel. Use of an alloy steel is also acceptable. 

1/4 through 1 in. diameter, all lengths: Rockwell C25 - C34. 

1-1/8 through 1-1/2 in. diameter, all lengths: Rockwell C19 - C30. 

1/4 through 1 in. diameter, all lengths: Rockwell 30N54 maximum. 

1-1/8 through 1-1/2 in. diameter, all lengths: Rockwell 30N50 maximum. 

1/4 through 1 in. diameter, all lengths: 85,000 psi. 

1-1/8 through 1-1/2 in. diameter, all lengths: 74,000 psi. 

1/4 through 1 in. diameter, all lengths: 92,000 psi. minimum 

1-1/8 through 1-1/2 in. diameter, all lengths: 81,000 psi. minimum 

1/4 through 1 in. diameter, all lengths: 120,000 psi. minimum 

1-1/8 through 1-1/2 in. diameter, all lengths: 105,000 psi. minimum 



See Appendix-A for plating information. 

x 

** 


x 

** 

Description 

Applications/ 

Advantages 


Material 

A cap screw made from medium carbon alloy steel and heat-treated. 

Has greater tensile strength than a Grade-5. Designed for use in high stress applications. See specifications below for more 

information on how the Grade-8 exceeds the strength of a Grade-5. 

Grade-8 cap screws shall be heat-treated, oil-quenched and tempered at a minimum temperature of 800°F. 

Medium carbon alloy steel. Note: For diameters 1/4 through 7/16 inch, it is permissible to use AISI 1541 steel. 

Core Hardness 1/4 through 1-1/2 in. diameter, all lengths: Rockwell C33 - C39. 

Surface Hardness 

Proof Load 



Elongation* 


Plating 

1/4 through 1-1/2 in. diameter, all lengths: Rockwell 30N58.6 maximum. 

1/4 through 1-1/2 in. diameter, all lengths: 120,000 psi. 

1/4 through 1-1/2 in. diameter, all lengths: 130,000 psi. minimum 

1/4 through 1-1/2 in. diameter, all lengths: 150,000 psi. minimum 



See Appendix-A for plating information. 

*These properties are tested only on machined specimens when the testing machine cannot provide for full testing of the parts. 

**Product standards require the manufacturer’s head marking to appear on the top of all cap screws 1/4” diameter and larger. “X” represents one location such a marking may appear.

POLYURETHANE 

BUMPERS 

self adhesive, 100% polyurethane bumpers 

Part Number PP-BS2 

0.440’ x 0.200” (11.1 mm x 5.1 mm) 

6 x 12 Kiss Cut Pad 

242 pieces per pad / 5,082 per carton 

Hemispherical 


0.375” x 0.211” (9.5 mm x 5.4 mm) 




0.335’ x 0.085” (8.5 mm x 2.2 mm) 




0.700” x 0.380” (17.8 mm x 9.6 mm) 




0.375” x 0.150” (9.5 mm x 3.8 mm) 




0.312” x 0.085” (7.9 mm x 2.2 mm) 




0.750” x 0.075” (19.1 mm x 1.9 mm) 




0.250” x 0.062” (6.4 mm x 1.6 mm) 




0.620” x 0.310” (15.7 mm x 7.9 mm) 



Square 


0.500” x 0.230” (12.7 mm x 5.8 mm) 


1,200 pieces per pad / 5,000 per carton 


0.780” x 0.380” (19.8 mm x 9.7 mm) 




0.810” x 0.300” (20.6 mm x 7.6 mm) 




0.400” x 0.100” (10.2 mm x 2.5 mm) 




0..780” x 0..254” (19.8 mm x 6.4 mm) 


98 pcs per pad / 2,940 per carton 


0.500” x 0.120” (12.7 mm x 3.0 mm) 


200 pcs per pad / 5,000 per carton 

Phone (314) 567-8585 Fax (314) 567-7334 www.purchasepartners.com

Cylindrical 

All Bumpers available in clear, black, brown, white and gray. 

Custom shapes, sizes and colors are available upon request. 

Special 

Purchase Partners offers a 

wide range of products that 

are used in applications 

such as: 

• Automotive 

• Appliances 

• Medical Equipment 

• Furniture 

• Electronics 

• Circuit Boards 

• Cabinets 

The design application 

for polyurethane bumpers 

is to cushion, to prevent 

vibration, skidding 

or marring surfaces, and 

to create space between 

parallel surfaces such as 

printed circuit boards. 

Purchase Partners provides 

two pressure sensitive 

adhesive systems; 

a very aggressive rubber-based 

adhesive or a 

high performance 

acrylic-based adhesive 

capable of temperatures 

up to 300 degrees F (149 

degrees C). 


Caps, Plugs, Tubing Inserts 

and Vinyl Handle Covers 

PLUGS 

• Tapered Series - Poly-Plugs 

• P Series - Pull Plugs 

• PR Series - Pull-Ring Plugs 

• FP Series - Flared Fitting Plugs 

• PI Series - Push-In Plugs 

• F&R Series - Sheet Metal Plugs 

• YP Series - Electrical Connectors 

CAPS 

• C Series - End Caps 

• CL Series - Caps Long 

• CS Series - Caps Short 

• RC Series - Electrical Connectors 

• TC Series - Standard Thread Tear Caps 

• FW Series - Flanged Washers 

• FC Series - Flanged Caps 

• FCL Series - Flanged Caps Long 

• SFC Series - Split Flange Coupling Caps 

• SC Series - Standard Thread Caps 

• PC Series - Pipe Caps 

• FS Series - Friction Fit Face Seal Caps 

TUBING INSERTS 

• REC Series - Rectangular 

• RTI Series - Round 

• STI Series - Square 

VINYL SERIES 

• Vinyl Closures 

Phone (314) 567-8585 Fax (314) 567-7334

RECTANGULAR 

TUBING INSERTS 

PART NO. SHANK DEPTH TO FIT TUBE WALL STANDARD 

C TUBE GAGE THICKNESS CARTON QTY. 

REC 1/2 x 1 0.46 16-18 .065-.049 5,000 

REC-P 5/8 x 1 1/4 0.49 16-18 .065-.049 5,000 

REC 5/8 x 1 3/8 0.47 14-20 .083-.035 3,000 

REC 3/4 x 1 1/2 0.5 14-20 .083-.035 2,000 

REC 1 x 1 1/2 0.48 14-20 .083-.035 2,000 

REC 1 x 2 - 10 0.5 14-Oct .134-.083 1,500 

REC 1 x 2 - 14 0.5 14-20 .083-.035 1,500 

REC 1 x 2 - 16 0.5 16-18 .065-.049 1,000 

REC 1 x 2 1/2 0.5 14-20 .083-.035 1,000 

REC 1 1/2 x 2 1/2 0.66 14-20 .083-.035 500 

RECTANGULAR 

ROUND TUBING 

INSERTS 



RTI 1/2- 16 0.49 16-18 .065-.049 10,000 

RTI 5/8 0.4 14-20 .083-.035 5,000 

RTI 3/4 0.44 14-20 .083-.035 5,000 

RTI 7/8 0.5 14-20 .083-.035 4,000 

RTI 1 - 10 0.51 14-Oct .134-.083 4,000 

RTI 1 - 14 0.49 14-20 .083-.035 4,000 

RTI 1 - 1/8 0.51 14-20 .083-.035 2,500 

RTI 1 1/4 -10 0.44 14-Oct .134-.083 2,500 

RTI 1 1/4 - 14 0.49 14-20 .083-.035 2,500 

RTI 1 1/2 0.5 14-20 .083-.035 1,500 

RTI 1 5/8 0.5 14-20 .083-.035 1,000 

RTI 1 3/4 0.6 14-20 .083-.035 1,000 

RTI 2 - 10 0.56 14-Oct .134-.083 500 

RTI 2 - 14 0.56 14-20 .083-.035 500 

RTI 2 1/4 0.56 14-20 .083-.035 500 

RTI 2 3/8 0.71 14-Oct .134-.083 400 

RTI 2 1/2 - 8 0.8 12-Aug .165-.109 400 

RTI 2 1/2 - 14 0.8 14-18 .083-.049 400 

SQUARE TUB- 

ING INSERTS 



STI 1/2 0.4 16-18 .065-.049 10,000 

STI 5/8 0.48 14-20 .083-.035 5,000 

STI 3/4 0.48 14-20 .083-.035 5,000 

STI 7/8 0.5 14-20 .083-.035 3,000 

STI 1 - 10 0.44 14-Oct .134-.083 2,500 

STI 1 - 14 0.45 14-20 .083-.035 2,500 

STI 1 - 16 0.48 16-18 .065-.049 2,500 

STI 1 1/8 0.49 14-20 .083-.035 2,000 

STI 1 1/4 0.49 14-20 .083-.035 2,000 

STI 1 3/8 0.47 14-20 .083-.035 1,000 

STI 1 1/2 - 10 0.47 14-Oct .134-.083 1,000 

STI 1 1/2 - 14 0.5 14-20 .083-.035 1,000 

STI 1 3/4 0.78 14-20 .083-.035 1,000 

STI 2 - 10 0.72 14-Oct .134-.083 500 

STI 2 - 14 0.72 14-20 .083-.035 500 

ROUND TUBING INSERTS 

SQUARE

Casters and Wheels 

PP8/PP9 Series 

Capacity: 55 - 130 lbs 

Feature: 

* PP 8 series -- heavy duty type 

* PP 9 series -- standard type 

* available in black or other colors 

* brake available for 40, 50 & 60 mm 

Type: plate, thread stem, friction grip and socket stem 

Size: 30 mm, 40 mm, 50 mm, and 60 mm 

Wheel: Nylon. PU/Nylon, Grey Rubber or TPR/Nylon 

P21 Series 


Features: 

* Double ball raceway. 

* Zinc or chrome finished. 

* Side brake (wheel brake) available. 

Type: plate, thread stem, friction grip and bolt hole 

Size: 2-1/2", 3", and 4" 

Wheel: PU/PP, TPR/PP, Nylon, Solid Rubber 

P22 Series 


Features: 


* Zinc or chrome finished. 

* Side brake or front brake both available. 

Type: plate, thread stem, friction grip. 

Size: 2", 2-1/2" & 3" 

Wheel: TPR/PP, Nylon, Solid Rubber PU/PP

Casters and Wheels 

P35 Series 


Features: 


* Zinc or Chrome finished. 

* Front brake (total lock). 

Special: Total lock (front brake) 

Type: plate, thread stem, solid stem, bolt hole 

Size: 3", 3-1/2", 4", and 5" 

Wheel: Nylon, PU/PP, Mold on Rubber/Aluminum center, Grey Rubber/ 

Nylon center, TPR/PP wheel (plain bearing or w/ precision ball bearing) 

P803/813 Series 


Features: 

*Drop-forged SAE 1045 steel top plate and yoke base. 

*Top plate (15/32" thick) and double-welded fork 

(5/16" thick). 

*Zinc finished or Powder coated. 

*Precision thrust ball bearing (dia. 90 mm) for upper 

raceway and precision tapered roller bearing 

(dia. 20mm) in the lower raceway. 

*3/4" solid axle with lock nut. 

*4 position lock or total lock available. 

Top plate: 4-1/2 x 6-1/4" 

Size: 6", 8", 10" & 12" (for 2-1/2" and 3" wheel width) 

Wheel: Mold on Rubber/Semi-steel center, Mold on PU/Semi-steel center, 

Semi-steel 

For current information on the casters 

and wheels Purchase Partners can 

supply, please call our customer service 

department or visit us at 

www.purchasepartners.com 

Phone 314/ 567-8585 

Fax 314/ 567-7334

Definitions 

A caster is usually measured by the size of its wheel. For example, a 3" caster 

would have a 3" wheel -- even though the total overall height of the unit is more 

than 3" tall. Casters come in two basic types: Swivel and rigid. Some manufacturers 

also call the rigid "fixed" or "stationary" -- which is not a good term for something 

that is supposed to move. Casters are mounted using fastenings -- usually a 

plate that is bolted or welded in place, or a stem that is inserted into tubing. 

Axle. The bolt that runs through the wheel and through the swivel (a.k.a. "kingpin."). 

Bearing. A bearing is the moving part that allows the caster to move. It refers to both 

the swivel bearing (a.k.a. raceway), and wheel bearing. 

Bolt Holes. The holes in the top plate allowing the caster to be mounted on the cart. 

Bore. The hole through the middle of a wheel. Also a very tedious person. 

Brake. Just like the emergency brake on a car -- when applied, it helps prevent the wheel 

from rolling. 

Capacity. Also known as load capacity -- the weight the caster will safely hold. 

Caster. A wheel on a swivel, attached under a piece of furniture or other heavy object to 

make it easier to move. (The dictionary came up with this definition, not us.) 

Diameter. The wheel diameter of a caster. 

Fastening. The method of mounting a caster to the furniture or cart (i.e., top plate, 

threaded stem, etc.). 

Hub. The center core of a wheel. 

Hub Length. The length of the bore of a wheel. The hub length is usually wider than the 

tread. 

Kingpin. The axle that holds the fastening to the caster body and allows the unit to 

swivel. 

Load Capacity. Also known as capacity -- the weight the caster will safely hold. 

Overall Height. The total vertical height of the caster, from the floor to the top of the 

mounting plate, or the base of the stem. 

Rigid. A caster that doesn't swivel, but still rolls forward and back. Also known as a 

"fixed" or "stationary" caster. 

Stem. A fastening that usually fits into tubing for the caster to be mounted. 

Swivel Lock. Just like it sounds: It locks the swivel, making the caster act as a rigid. 

Swivel Raceway. One or two rows of ball bearings which bear the weight of the caster and allow 

the unit to swivel. 

Swivel Radius. The horizontal distance from the center of the kingpin to the trailing edge of the 

wheel. This determines the "sweep" of a caster as it pivots -- a good thing to know to make sure the 

wheel doesn't strike something as it turns. 

Thread Guard. A small piece of metal or plastic that fits over the wheel bearing to help prevent 

threads, dirt, and other materials from getting into the wheel. Note the spelling -- thread guard, not 

tread. Big difference. 

Tread. The part of the wheel that rolls on the ground. Not to be confused with "thread". 

Tread Width. The width of the wheel tread.

Die Casting...Aluminum and Zinc 

Sand Casting...Grey and Ductile 

CASTINGS 

Austempered Ductile Iron (ADI) offers the best combination of 

lower costs, design flexibility, good machinability, high strength-to-weight ratio, good 

toughness, good wear resistance, and fatigue strength. ADI offers this superior combination 

of properties because it has all the advantages of a Ductile Iron casting plus mechanical 

properties which are superior to all cast irons and most steel forgings and castings as 

a result of the special heat treat process. 

PROPERTIES OF AUSTEMPERED DUCTILE IRON 

• STRENGTH - equal to or greater than steel 

• ELONGATION - maintain as cast elongation while double the strength of Q & T ductile 

• TOUGHNESS - better than ductile iron and equal to or better than cast or forged steel 

• DENSITY - ductile .26#/cu. in. vs. steel .28#/cu. in. 

• FATIGUE STRENGTH - equal to or better than forged steel, increases with machining after heat 

treat 

Industrial, Commercial and Defense Applications 

For this wide range of applications, die castings are maximizing 

product performance at lowest unit cost. Vacuumassisted 

die casting produces sound, porosity-controlled valve 

bodies for marine power steering, industrial pumps, and 

commercial air compressors; a manifold valve has seven external 

thread sets cast in place, replacing six former parts. 

Superior strength makes die casting the optimum choice for Zn commercial door 

handles and executive desk staplers. Light weight and high impact strength are 

combined in housings for hand-held staplers and nailers and in aircraft food tray 

arms. Handles for butterfly valves and pumps are also a successful market for 

Purchase Partners. 

Send your Die and Sand Cast Inquiry to Purchase Partners Today! 

Phone (314) 567-8585 

Fax (314) 567-7334

Purchase Partners is your supply source for weld less chain. 

Our product line includes Double Loop Chain, Jack Chain, Single Loop Chain, Sash 

& Safety Chain, S-Hooks, and related chain assemblies. 

Double Loop Chain 

Trade 

Size 

Wire 

Gauge 

Wire Diameter, 

Inches 

Length per 

100 Links, 

Inches 

Weight per 

100 Feet, 

Pounds 

Working Load 

Limit, Pounds 

Break Test 

Load Pounds 

6 17 0.054 83 2.8 40 160 

5 16 0.062 92 3.7 55 220 

4 15 0.072 100 5 70 280 

3 14 0.08 110 6 90 360 

2 13 0.091 133 8 115 460 

1 12 0.105 171 10 155 620 

1/0 11 0.12 178 13 200 800 

2/0 10 0.135 182 17 255 1020 

3/0 9 0.148 219 20 305 1220 

4/0 8 0.162 219 25 365 1460 

Double Jack Chain 

Trade Size Material Size 

-inches 

Length Per 

100 Links - 

inches 

Approximate 

Weight Per 

100 Feet - 

Steel 

Approximate 

Weight Per 

100 Feet - 

Brass 

Working 

Load Limit - 

Steel 

Working 

Load Limit - 

Brass 

Minimum 

Break Test 

Load -Steel 

Minimum 

Break Test 

Load -Brass 

16 0.062 34 3.5 Lbs. 3.75 Lbs. 11 Lbs. 8 Lbs. 45 Lbs. 30 Lbs. 

Other Chain Configurations Available 

Single Loop Chain 

Single Jack Chain 

Plumber’s Chain 

Sash Chain 

Phone (314) 567-8585 Fax (314) 567-7334 

2369 Schuetz Road St. Louis, MO 63146

Channel and Cable Tray Hardware 

• Spring Nuts 

• Channel 

• Pipe Clamps 

• Beam Clamps 

• C-Clamps 

• Flat Fittings 

• 90° Fittings 

• Angle, U & Zee 

• Hangers 

• U-Bolts 

• Threaded Rod 

8-32 Spring Nuts 

Mini- Channel, Long Spring, No Shrink 

Mini- Channel, Short Spring, No Shrink 

CHANNEL AND CABLE TRAY HARDWARE 


w/ Spring (1.50), Shrink Wrap 

w/ Spring (.75), No Shrink, Thin 

Mini-Channel, Long Spring, No Shrink 


No Spring, No Shrink 



Mini-Channel, Short Spring, No Shrink 

1/4-20 Spring Nuts 

w/ Spring (2.50), No Shrink, Thick 


w/Spring (.75), No Shrink, Thin 


Mini-Channel, Short Spring, No Shrink 




w/ Spring (.75), Shrink Wrap, Thin 


Spring Nuts 











No Spring, No Shrink, Thin 5/8-11 






No Spring, No Shrink, Thin 






No Spring, No Shrink, Thin


Channel 

AS-112 

3-1/4" x 1-5/8" x 3-1/4" 

1 Gauge Channel 

wt./100ft - 313# 

AS-122 

2-7/16" x 1-5/8" x 2-7/16" 


wt./100ft - 254# 

AS-132 

1-5/8" x 1-5/8" x 1-5/8" 


wt./100ft - 194#


Pipe Clamps 

EMT Clamps 

Part Number 

and Size 

Weight/ Std. 

100 Pcs Pkg. 

PP-EMT-3/8-EG 9 100 

PP-EMT-1/2-EG 11 100 

PP-EMT-3/4-EG 12 100 

PP-EMT-1-EG 15 100 

PP-EMT-1-1/4-EG 18 100 

PP-EMT-1-1/2-EG 29 50 

PP-EMT-2-EG 33 50 

Rigid Clamps 

Part Number 

and Size 

Weight/ Std. 

100 Pcs Pkg. 

PP-RIG-3/8-EG 12 100 

PP-RIG-1/2-EG 13 100 

PP-RIG-3/4-EG 15 100 

PP-RIG-1-EG 18 100 

PP-RIG-1-1/4-EG 22 100 

PP-RIG-1-1/2-EG 32 50 

PP-RIG-2-EG 37 50 

PP-RIG-2-1/2-EG 42 50 

PP-RIG-3-EG 49 50 

PP-RIG-3-1/2-EG 65 25 

PP-RIG-4-EG 69 25 

PP-RIG-5-EG 82 25 

PP-RIG-6-EG 107 25 

PP-RIG-8-EG 133 25 

PP-RIG-10-EG 143 25 

PP-RIG-12-EG 174 25 

Universal Clamps 

Part Number 

and Size 

Weight/ Std. 

100 Pcs Pkg. 

PP-UNV-3/8-EG 12 100 

PP-UNV-1/2-EG 13 100 

PP-UNV-3/4-EG 14 100 

PP-UNV-1-EG 18 100 

PP-UNV-1-1/4-EG 21 100 

PP-UNV-1-1/2-EG 23 50 

PP-UNV-2-EG 25 50


OD Clamps Electro-galvanized 

Part Number 

and Size 

Weight/ Std. 

100 Pcs Pkg. 

PP-OD-1/4-EG 7.5 100 

PP-OD-3/8-EG 8.1 100 

PP-OD-1/2-EG 9 100 

PP-OD-5/8-EG 10 100 

PP-OD-3/4-EG 10.6 100 

PP-OD-7/8-EG 12 100 

PP-OD-1-EG 14 100 

PP-OD-1-1/8-EG 15 100 

PP-OD-1-1/4-EG 16 100 

PP-OD-1-3/8-EG 17 100 

PP-OD-1-1/2-EG 17.5 100 

PP-OD-1-5/8-EG 20.9 50 

PP-OD-1-3/4-EG 21.5 50 

PP-OD-1-7/8-EG 27 50 

PP-OD-2-EG 29 50 

PP-OD-2-1/8-EG 32 50 

PP-OD-2-1/4-EG 33 50 

PP-OD-2-3/8-EG 34 50 

PP-OD-2-1/2-EG 35 50 

PP-OD-2-5/8-EG 37.5 50 

PP-OD-2-3/4-EG 38.5 50 

PP-OD-2-7/8-EG 39 50 

PP-OD-3-EG 40.5 50 

PP-OD-3-1/8-EG 43 50 

PP-OD-3-1/4-EG 45 50 

PP-OD-3-3/8-EG 46 50 

PP-OD-3-1/2-EG 46.5 50 

PP-OD-3-5/8-EG 57 25 

PP-OD-3-3/4-EG 58.5 25 

PP-OD-3-7/8-EG 60 25 

Part Number 

and Size 

Weight/ Std. 

100 Pcs Pkg. 

PP-OD-4-EG 61 25 

PP-OD-4-1/8-EG 62 25 

PP-OD-4-1/4-EG 64 25 

PP-OD-4-3/8-EG 65 25 

PP-OD-4-1/2-EG 67 25 

PP-OD-4-5/8-EG 69.5 25 

PP-OD-4-3/4-EG 72 25 

PP-OD-4-7/8-EG 73 25 

PP-OD-5-EG 74 25 

PP-OD-5-1/8-EG 76 25 

PP-OD-5-1/4-EG 77 25 

PP-OD-5-3/8-EG 78 25 

PP-OD-5-1/2-EG 79 25 

PP-OD-5-5/8-EG 88 25 

PP-OD-5-3/4-EG 90.5 25 

PP-OD-5-7/8-EG 91.5 25 

PP-OD-6-EG 94 25 

PP-OD-6-1/8-EG 96 25 

PP-OD-6-1/4-EG 98 25 

PP-OD-6-3/8-EG 99 25 

PP-OD-6/1/2-EG 100 25 

PP-OD-6-5/8-EG 102 25 

PP-OD-6-3/4-EG 104 25 

PP-OD-6-7/8-EG 106 25 

PP-OD-7-EG 108 25 

PP-OD-7-1/8-EG 110 25 

PP-OD-7-1/4-EG 112 25 

PP-OD-7-3/8-EG 114 25 

PP-OD-7-1/2-EG 116 25 

PP-OD-7-5/8-EG 117 25 

PP-OD-7-3/4-EG 119 25 

PP-OD-7-7/8-EG 212 25 

PP-OD-8-EG 123 25 

PP-OD-8-1/8-EG 125 25 

PP-OD-8-1/4-EG 125 25 

PP-OD-8-3/8-EG 128 25 

PP-OD-8-1/2-EG 129 25 

PP-OD-8-5/8-EG 130 25 

PP-OD-8-3/4-EG 

PP-OD-8-7/8-EG 

132 Bulk 

134 Bulk


OD Clamps Copper Plated 

Beam Clamps 

AS-2651-T1-EG 

Part Number 

and Size 

Weight/ Std. 

100 Pcs Pkg. 

PP-OD-3/8-CP 8.1 100 

PP-OD-1/2-CP 9 100 

PP-OD-5/8-CP 9.2 100 

PP-OD-7/8-CP 10/5 100 

PP-OD-1-1/8-CP 15/3 100 

PP-OD-1-3/8-CP 17.8 100 

PP-OD-1-5/8-CP 20.2 50 

PP-OD-2-1/8-CP 31.8 50 

PP-OD-2-5/8-CP 35.6 50 

PP-OD-3-1/8-CP 43 50 

PP-OD-3-5/8-CP 57 25 

PP-OD-4-1/8-CP 62 25 

PP-OD-5-1/8-CP 76 25 

PP-OD-6-1/8-CP 96 25 

PP-OD-8-1/8-CP 125 25 

PP-AS-2651-T2-EG 

Use with 1-5/8" Deep Channels 

80 lbs./C 

PP-AS-855-EG 


93 lbs./C 

PP-AS-907-EG & AS-998-EG 


107 lbs./C 

PP-AS-686-EG 

Part Stock Set Load Weight/ 

Number Thickness Screw Rating 100pcs 

PP-AS-907 1/4 3/8 450# 26 

PP-AS-998 3/8 1/2 950# 64 

PP-AS-685-EG 

Requires 1/2" x 1-3/4" bolt 

26 lbs./C 

Cup point set screw included 

63 lbs./C


AS-684-EG 

AS-916-EG 

Use with 1-5/8" Deep 

Channels 

94 lbs./C 

2" Throat Opening 

72 lbs./C 

PP-AS-2622-EG 

PP-AS-736-EG 

3/4" Throat Opening 

41 lbs./C 

PP-AS-2623-EG 

Part 

No. 

Flange 

Max 

Width 

Min 

A 

Size 

Wt./ 

100pcs 

PP-AS-736-J6 7" 3" 8-5/8" 24 

PP-AS-736-J10 11" 7" 12-5/8" 33 

AS-3201-EG 

Use with AS-2622 or AS-2624 

31 lbs./C 

PP-AS-2654-EG 

Rod Size Wt./ 100pcs 

1/4" 4 

3/8" 4 

1/2" 3 

Use with AS-2622 

PP-AS-2654-A-EG 


53 lbs./C 

PP-AS-2624-EG 

Use with 13/16" Deep Channels 

43 lbs./C


22 lbs./C 

PP-AS-858-EG 

Part Number 

and Size 

Rod 

Size Thickness 

Set Screw 

Size 

Throat Weight/ 

Opening 100 Pcs 

PP-AS-858-3/8 3/8 3/16 1/2x1-1/2 15/16 100 

PP-AS-858-1/2 1/2 1/4 1/2x1-1/2 15/16 130 

PP-AS-858-5/8 5/8 1/4 5/8x1-1/2 1-5/16 160 

PP-AS-865-EG 

Part Number 

and Size 

Rod 

Size Thickness 

Set Screw 

Size 

Throat Weight/ 

Opening 100 Pcs 

PP-AS-865-3/8 3/8 3/16 1/2x2 1-3/16 151 

PP-AS-865-1/2 1/2 1/4 1/2x2 1-5/16 195 

PP-AS-871-EG 

Length 

Weight/ 

100 Pcs 

9" 33 

12" 45 

15" 57


Flat Fittings 

AS-619-EG 

Part Number 

and Size 

Bolt 

Size 

Hole 

Size 

Stock 

Size 

Weight/ 

100 Pcs 

PP-AS-619-1/4-EG 1/4" 11/32" 1/4" 18 

PP-AS-619-3/8-EG 3/8" 7/16" 1/4" 17 

PP-AS-619-1/2-EG 1/2" 9/16" 1/4" 17 

PP-AS-619-5/8-EG 5/8" 11/16" 1/4" 16 

PP-AS-619-3/4-EG 3/4" 13/16" 1/4" 16 

1-5/8" x 1-5/8" Square Washers- 1/4" Thick 

AS-620-EG 

Part Number 

and Size 

Bolt 

Size 

Hole 

Size 

Stock 

Size 

Weight/ 

100 Pcs 

PP-AS-620-3/8-EG 3/8" 7/16" 1/8" 13 

PP-AS-620-1/2-EG 1/2" 9/16" 1/8" 13 

2" x 2" Square Washers - 1/8" Thick 

AS-3458-EG 

Part Number 

and Size 

Bolt 

Size 

Hole 

Size 

Stock 

Size 

Weight/ 

100 Pcs 

PP-AS-3458-1/2-EG 1/2" 9/16" 1/4" 27 

PP-AS-3458-5/8-EG 5/8" 11/16" 1/4" 26 

PP-AS-3458-3/4-EG 3/4" 13/16" 1/4" 25 

2" x 2" Square Washers - 1/4" Thick 

AS-2504-EG 

Part Number 

and Size 

Bolt 

Size 

Hole 

Size 

Stock 

Size 

Weight/ 

100 Pcs 

PP-AS-2504-1/4-EG 1/4" 11/32" 1/4" 18 

PP-AS-2504-3/8-EG 3/8" 7/16" 1/4" 18 

PP-AS-2504-182-EG 1/2" 9/16" 1/4" 17 

1-5/8" x 1-5/8" Guided Square Washers - 1/4 Thick 

AS-714-EG 

AS-718-EG 

3-1/2" x 5-3/8" tee plate 

80 lbs./C 

PP-AS-718-4-EG 

3-1/2" x 3-1/2" flat "L" plate 

58 lbs./C


3-1/2" x 5-3/8" flat "L" plate 

80 lbs./C 

PP-AS-744-EG 

PP-AS-747-EG 

69 lbs./C 

PP-AS-750-EG 

104 lbs./C 

PP-AS-854-EG 

105 lbs./C 

145 lbs./C 

90-Degree Fittings 

PP-AS-603-EG 

PP-AS-604-EG 

PP-AS-605-EG 

1-7/8" x 2-1/6" 

37 lbs./C 

1-5/8" x 2-5/16" 

36 lbs./C 

2-1/4" x 3-1/2" 

58 lbs./C


PP-AS-606-EG 

PP-AS-745-EG 

PP-AS-806-EG 

1-5/8" x 4-1/8" 

57 lbs./C 

PP-AS-2520-EG 

1-7/8" x 3-15/16" 

58 lbs./C 

PP-AS-607-EG 

2" x 22" 

40 lbs./C 

PP-AS-660-EG 

2" x 2-5/8" 

42 lbs./C 

PP-AS-3373-EG 

3-1/2" x 4-1/8" 

78 lbs./C 

3-3/4" x 3-7/8" 

80 lbs./C 

PP-AS-746-EG 

151 lbs./C 

PP-AS-748-EG 

72 lbs./C 

PP-AS-615-EG 

105 lbs./C 

133 lbs./C


Angle Fittings 

PP-AS-633-EG 

PP-AS-781-EG 

Part 

Number 

Angle 

Weight/ 

100pcs 

PP-AS-633-30 30 Degree 58 

PP-AS-633-45 45 Degree 58 

PP-AS-633-60 60 Degree 58 

PP-AS-624-EG 

Part 

Number 

Angle 

Weight/ 

100pcs 

PP-AS-781-30 30 Degree 78 

PP-AS-781-45 45 Degree 78 

PP-AS-781-60 60 Degree 78 

PP-AS-793-EG 

Part 

Number 

Angle 

Weight/ 

100pcs 

PP-AS-624-30 30 Degree 58 

PP-AS-624-45 45 Degree 58 

PP-AS-624-60 60 Degree 58 

PP-AS-9402-1/2-EG 

Part 

Number 

Angle 

Weight/ 

100pcs 

PP-AS-793-30 30 Degree 100 

PP-AS-793-45 45 Degree 100 

PP-AS-793-60 60 Degree 100 

PP-AS-9403-1/2-EG 

90 lbs./C 

PP-AS-9404-1/2-EG 

108 lbs./C 

Specials quoted 

per customer print. 

126 lbs./C


Zee Fittings 

PP-AS-756-EG 

PP-AS-611-EG 


70 lbs./C 

PP-AS-928-EG 


55 lbs./C 


47 lbs./C 

U-Fittings 

PP-AS-679-EG 

PP-AS-721-EG 


128 lbs./C 

PP-AS-2648-EG 


105 lbs./C 

PP-AS-613-EG 


108 lbs./C 


88 lbs./C


Splice/Joiners 

PP-AS-601-EG 

PP-AS-602-EG 

36 lbs./C 

Pp-AS-888-EG 

54 lbs./C 

PP-AS-888-5-EG 

75 lbs./C 

PP-AS-631-EG 

94 lbs./C 

PP-AS-644-EG 


119 lbs./C 


78 lbs./C 

Post Base 

PP-AS-3013-EG 

PP-AS-3013-SQ-EG


307 lbs./C 307 lbs./C 

PP-AS-3025-EG 

PP-AS-3025-FL-EG 

282 lbs./C 

282 lbs./C


Miscellaneous Fittings 

PP-AS-2632-EG 

Hole Size Use With Use With 

9/16" 1/2" Rod 1/2" Rod 

7/8" 1/2" Conduit 1/2" Conduit 

PP-AS-2632-D-EG 

Hole Size Use With Use With 

9/16" 1/2" Rod 1/2" Rod 

7/8" 1/2" Conduit 1/2" Conduit 

Use w/1-5/8", 1-3/8", 1" & 13/16" 

Channel 

25 lbs./C 

PP-AS-2631-EG 

Use w/3-1/4" & 2-7/16" Channel 

34 lbs./C 

PP-AS-2631-D-EG 

Use w/1-5/8", 1-3/8" & 13/16" Channel 

27 lbs./C 

PP-AS-2656-EG 

Use w/3-1/4" & 2-7/16" Channel 

36 lbs./C 

PP-AS-2657-EG 

Rod 

Stock 

A 

Size Dia 

Wt./ 

C 

3/8" 1-7/16" 3/8" 27 

1/2" 1-3/8" 3/8" 45 

Linked Eyelet with Stud 

Rod 

Stock 

A 

Size Dia 

Wt./ 

C 

3/8" 1-7/16" 3/8" 23 

1/2" 1-3/8" 3/8" 32 

Linked Eyelet


PP-AS-2658-EG 

PP-AS-2659-EG 

Rod 

Stock 

A 

Size Dia 

Wt./ 

C 

3/8" 1-13/16" 3/8" 16 

1/2" 1-3/4" 3/8" 20 

Rod 

Stock 

A 

Size Dia 

Wt./ 

C 

3/8" 1-3/4" 3/8" 15 

1/2" 1-3/4" 3/8" 18 

Eyelet with Stud 

Eyelet


Threaded Rod, Rod Couplers & Fasteners 

Fasteners 

Threaded Rod 

Hex Head Cap Screws 

Hex Nuts 

Fender Washers 

Size 

Weight/ 

100 Ft. 

PCS. Per 

Bundle 

1/4-20 11.9 50 

5/16-18 19.3 35 

3/8-16 28.4 25 

7/16-14 39.6 17 

1/2-13 51.2 12 

9/16-12 67.0 10 

5/8-11 83.1 8 

3/4-10 121.7 5 

7/8-9 167.5 4 

1-8 219.0 2 

1-1/8-7 280.5 1 

1-1/4-7 350.0 1 

1-3/8-6 417.2 1 

1-1/2-6 504.7 1 

1-3/4-5 690.0 1 

2-4-1/2 904.0 1 

Flat Washers 

Stock Lengths: 3', 6', 10' & 12' 

Plain or Zinc 

Rod Couplers 

Lock Washers 

Others Available 

Part Number 

And Size 

Weight/ 

100 PCS 

PP-RC-1/4 x 7/8-EG 1.9 

PP-RC-3/8 x 1-1/8-EG 3.5 

PP-RC-3/8 x 1-3/4-EG 9 

PP-RC-1/2 x 1-1/4-EG 5.5 

PP-RC-1/2 x 1-3/4-EG 10 

PP-RC-5/8 x 2-1/8-EG 18 

PP-RC-3/4 x 2-1/4-EG 28


C-Clamps 

Fig. 21L Flat Pressed Steel C-Clamp 

Part Number 

and Size 

Rod 

Size 

Throat 

Opening 

Weight/ 

100 Pcs 

PP-21L-3/8 3/8" 3/4" 41 

PP-21L-1/2 1/2" 3/4" 42 

PP-21L-5/8 5/8" 3/4" 74 

PP-21L-3/4 3/4" 3/4" 82 

PP-21L-7/8 7/8" 3/4" 162 

Fig. 23L Malleable Iron C-Clamp 

Part Number 

and Size 

Rod 

Size 

Throat 

Opening 

Weight/ 

100 Pcs 

PP-23L-3/8 3/8" 3/4" 28 

PP- 23L-1/2 1/2" 3/4" 31 

PP-23L-5/8 5/8" 3/4" 42 

PP-23L-3/4 3/4" 3/4" 55 

Fig. 62 Junior Top Beam Clamp 

Part Number 

and Size 

Fig. 61 Top Beam Clamp 

Rod 

Size 

Throat 

Opening 

Weight/ 

100 Pcs 

PP-62-3/8 3/8" 5/8" 30 

PP- 62-1/2 1/2" 5/8" 39 

PP- 62-5/8 5/8" 5/8" 40 

PP- 62-3/4 3/4" 5/8" 67 

PP- 62-7/8 7/8" 5/8" 66 

Part Number 

and Size 

Rod 

Size 

Throat 

Opening 

Weight/ 

100 Pcs 

PP-61-3/8 3/8" 1-1/4" 38 

PP- 61-1/2 1/2" 1-1/4" 49 

PP- 61-5/8 5/8" 1-1/4" 66 

PP- 61-3/4 3/4" 1-1/4" 83

Fasteners for Construction 

DOMESTIC Product Line 

Flat-Tops Ideal for roof and wall applications. Flat-Top fasteners combine 

under-cut hex washer heads with EPDM cut-tubular sealing washers. They 

are a superior and cost-effective alternative to standard fasteners with metal 

back washers. 

Ultimate Self-Drill Designed specifically for premium metal roof and 

wall applications. Ultimate fasteners combine under-cut hex washer heads 

with EPDM cut-tubular sealing washers and zinc die cast heads to provide a 

premium long-life fastener. 

Self-Drillers Designed specifically for metal to metal applications. Self- 

Drilling fasteners are manufactured with an innovative tapered compression 

point (TCP) process allowing for tightened tolerance controls to provide an 

ultra-sharp cutting edge. Fastener heads are guaranteed not to red rust for the 

life of the building. 

Metal to Wood High quality metal to wood fasteners with three available 

levels of quality. Wood-fasts double lead thread screws. Wood-tites offer 

high & low threads with a Type 17 point. Ultimate Wood-tite offer high & 

low threads with a Type 17 point along with a zinc die cast head offering a 

premium metal to wood fastener. 

Concrete Screws Designed for light and medium duty masonry applications. 

Fasteners come in bulk or packed at 100 per (with a drill bit). Con- 

Mate installation tool kits are also available. 

Grommets Designed specifically for light duty applications. Grommet Seal 

fasteners are a compression fastener used for side-lap applications which utilize 

fiberglass, plastic, or composite sheeting. 

2369 Schuetz Road St. Louis, MO 63146 

Phone (314) 567-8585 Fax (314) 567-7334

OFFSHORE Product Line 

PP-MARKER drywall & multipurpose screws 

are the industry favorite for easy application of drywall to 

steel studs up to 20 GA metal and for multipurpose fastening 

combinations of metals, woods, plastics, fiberglass, 

etc. These screws penetrate easily with low driving 

torque, which reduces operator fatigue. This quick 

penetrating action of the sharp, non-walking point combines 

with rapid thread formation for consistent quality 

fastenings. 

PP-DARTS is the quality line of self-drilling 

fasteners for penetrating metal up to 1/2" thick. Our 

self-drilling screws have flutes that start fast and remove 

chips quickly. Sharply formed flutes allow immediate 

drilling action without walking. Penetration starts with a 

quick curl of material and continues with excellent chip 

relief for maximum drilling depth. The designed threads 

also provide low driving torque for operator ease 

DECK SCREW is a corrosion resistant exterior wood 

screw for decking, siding, outdoor furniture, spas, gazebos 

and other exposed exterior construction. Plus and 

Dacro coatings are available. 

2369 Schuetz Road St. Louis, MO 63146 

Phone (314) 567-8585 Fax (314) 567-7334

CUTTING TOOLS 

Line Card 

DRILLS 

CARBIDE DRILLS 

Carbide Tipped...Core - Straight Shank, Core - Taper Shank, Drills for use in Hardened 

Steel, Jobber Length, Glass & Tile, Masonry, Taper Length, Taper Shank 

Solid Carbide...Drills - General Purpose 

JOBBER LENGTH DRILLS 

• General Purpose 

• Aircraft - NAS-907 Type A - 118 Degree Split Pt. 

• Aircraft - NAS-907 Type B - 135 Degree Split Pt. 

• Automotive - Tanged Shank 

• Cobalt - NAS-907 Type J - 135 Degree Split Pt. 

• Drill Blanks and Sets - H.S.S. 

• Heavy Duty - 135 Degree Split Pt. 

• High Helix 

• Left Hand 

• Low Helix 

• Metric Sizes 

• Parabolic - Bright & TiN Coated 

• Reduced Shank 

Titanium Nitride Coated 


• Parabolic 

REDUCED SHANK DRILLS 

• 1/4" Shank Metalworking 

• 3/8" Shank 

1/2" Shank S&D Drills 

• Cobalt 

SCREW MACHINE LENGTH DRILLS 

• Aircraft - NAS-907 Type C - 135 Degree Split Pt. 

• Cobalt 

• General Purpose - Bright & TiN Coated 

• Titanium Nitride Coated 

STRAIGHT SHANK DRILLS 

• Aircraft Extension 

• Core, Extra Length 

Phone (314) 567-8585 Fax (314) 567-7334 


TAPER LENGTH DRILLS 

• Automotive - Tanged Shank 

• Cobalt, Coolant Hole 


• Heavy Duty 

• High Helix 

• Metric Sizes 

TAPER SHANK DRILLS 

• Chip Breaker 

• Cobalt 

• Coolant Hole 

• Core 


ENDMILLS 

• 2 and 4 Flute Single Square End Mills 

• 2 and 4 Flute Single Ball End Mills 

FOUNDRY BURS 

• Double Cut Foundry Burs 

• Aluma Cut Foundry Burs 

INDUSTRIAL BURS 

• Cylinder Flat (with and without end-cut) 

• Cylinder Ball Nose 

• Ball Shape 

• Olive Shape 

• Pointed Tree Shape 

• Round Tree Shape 

• 14 Degree Cone Ball Nose 

• Flame Shape 

• Cone Shape 

• 60 Degree Cone 

• 90 Degree Cone 

• Inverted Cone Shape 

Your Supply Solution to Your Production 

Cutting Tool Requirements!

Let Us Turn Your Fabricated Metal 

Requirements into One 

Turnkey Assembly 

Purchase Partners is your supply source for fabricated metal products 

made from steel, stainless steel, and aluminum providing stamping, 

punching, bending, welding, electrostatic painting and powder coating 

for all types of sheet metal, tubing, wire and bar stock. 

FABRICATED 

METAL PRODUCTS 

• Formed Panels 

• Brackets 

• Grill Work 

Materials 

Mild Steel 

Stainless 

Aluminum 

• Metal Housings 

• Metal Pans 

• Refrigeration Parts 


Purchase Partners is Your Source for 

Volume Latches and Access Hardware, 

Providing JIT Deliveries! 

Our Product Line: Adjustable Series Draw Latch, Spring Latch Series , 

Versa Latch Series, Rotary Action Draw Latch, Under Center Series 

Draw Latch, Over-Center Draw Latch Series , Grab Handle, Pocket 

Pull, and Flush Pull Handles. 

DRAW LATCHES A broad range of latching options to draw and 

hold two panels together. 

COMPRESSION 

LATCHES 

Provide strong compression against gasketing 

dampens vibration, provides sealing. 

GRAB HANDLE 

Large and Small 

Handle design combines comfort with strength. 

Snap-on cover conceals mounting hardware. 

Front or rear mounting options. 

POCKET PULL SERIES 

Flush Pull and Snap In Style 

For lifting or pulling. 

Lifting load is transferred directly to panel 

edge. Single-hole. 

Phone (314) 567-8585 Fax (314) 567-7334 


LOCK NUTS 

Engineered Domestic Lock Nuts 

Principal Products: 

Collarlok® Nuts 

ESlok® Nuts 

Strux® Nuts 

Whiz Lock® Nuts 

Wheel nuts 

Nut & bracket assemblies 

Nut & washer assemblies 

Nylon nuts 

Fasteners used for assemblies 

All metal lock nuts 

Markets 

Aerospace 

Automotive 

Brake, Exhaust, Fuel, Interior Trunk, Fuel, 

Power Steering, Power Train, Suspension 

Agriculture 

Sickle Bar Guards, Wheel Fastening 

Truck and Trailer 

Bearing Retention, Wheel Fastening 

Industrial 

Lawn and Garden 

Lawn Tractor Components, Shift Linkages 

Collarlok® 

The Collarlok prevailing torque hex or flange nut design offers the reuse 

characteristics of the proven ESNA insert type. A red nylon collar bonded 

into the head of the nut provides a prevailing torque type nut with the 

advantage of high speed assembly using automatic assembly tools. The 

non-galling collar offers superior vibration performance in standard or metric 

threads. 

ESlok® 

The ESlok red nylon locking patch type fastener has a controlled 

amount of red nylon permanently bonded to the threads of the 

standard hex nut and to the center threads of the nut permitting either 

end entry of the bolt for automatic machine assembly. Parts are easily 

removed with a wrench and may be reused up to five times. No metal is 

removed or distorted insuring the tensile strength and non-galling characteristics of 

an ESlok self-locking fastener. 


Phone 314/ 567-8585 Fax 314/567-7334

Strux® Nuts 

LOCK NUTS 

The Strux nuts system provides a completely automated, accurate 

and reliable method for installing fasteners, as well as eliminating 

expensive manual secondary operations and increasing 

productivity. The result is a precisely located threaded hole that 

becomes an integral part of the steel plate. 

STRUX® is a registered trademark of Camcar Division of Textron Inc. 

Whiz Lock® 

Whiz Lock is a time-tested system for fastening products 

faster and better. These one-piece all-metal, free-spinning 

nuts and screws spin on and lock when seated. 

The underside or bearing surface side of a Whiz-Lock Fastener 

has a series of spiraling serrations or teeth. The number, 

shape, height, and curve of the teeth are important in producing higher break loose 

(off) torque in comparison to application (on) torque. 

The convex angle of the base improves the locking effectiveness of the teeth 

permitting first contact of the base of the Whiz-Lock Nut or Screw nearest the hole 

in the bearing surface. This produces a better contact particularly when the bearing 

surface is not flat or where the Whiz-Lock is being applied to the depressed side of 

punched holes. 

Whiz-Locks are designed to grip and oppose rotation as the Whiz-Lock is wrenched 

down on a bearing surface. When vibration, shock, load or other loosening forces 

are applied, the teeth grip the bearing surface with unequaled locking power. It 

takes over 30% more torque to remove a Whiz-Lock fastener than to apply it. 

The unique Whiz-Lock design -the teeth and the convex base- is verified by patents 

in major countries throughout the world. No other combination of teeth and base 

design approach the performance of Whiz-Lock fasteners. 


Phone 314/ 567-8585 Fax 314/567-7334

LOCK NUTS 

Offshore Product Line 

Part Series Description Sizes From 

NM Series 

Nylon Insert 

Machine Screw Pattern, Standard Height 

Machine screw threaded application 

#2 --- #12 

NTM Series 

Nylon Insert Locknut 

NE Series 

Nylon Insert 

NTE Series 


NU Series 


NTU Series 


NE8 (N1610) Series 


NTE8 (NTE1610) 


NU8 (NU1610) Series 


NTU8 (NTU1610) 


N1268 (N1260) Series 


Machine Screw Pattern, Thin(Jam) Hgt 

Machine screw threaded application where thin nut 

is required 

Light Hex, Standard Height 

For Fractional Bolt thread application 

Light Hex, Thin Height 

For Fractional Bolt thread application where thin 

Height is required 

Heavy Hex, Full Height 

Type NU Nuts are alternative Self Locking Nuts 

designed for the American Standard Heavy Hex 

series 

Heavy Hex, Thin Height 

Type NTU Nuts are designed for the American 

Standard Thin Heavy Hex series 

Light Hex, Grade 8 

NE8 Series for High Tensile Grade 8 application 

Double notched corners per IFI specifications 

Light Hex, Thin Height, Grade 8 

NE8 Series for High Tensile Grade 8 application 

where Thin Height is required 


Heavy Hex, Grade 8 

Type NU8 Nuts are designed for the American 

Standard Heavy Hex series where High Tensile 

Grade 8 application is critical 


Heavy Hex, Thin Height Grade 8 

Type NTU 8 Nuts are designed for the American 

Standard Heavy Thin Hex series where High 

Tensile Grade 8 application is critical 


High Hex, Grade 8 

Designed for applications that require pre-stressing 

high strength Bolts to their elastic limits. Provides 

extra threaded length and Hex Height attaining 

uniform thread loading and adequate wrenching 

#2 --- #12 

1/4" --- 11/2" 

1/4" --- 11/2" 

1/4" --- 3" 

1/4" --- 3" 

1/4" --- 11/2" 

1/4" --- 11/2" 

1/4" --- 3" 

1/4" --- 3" 

1/4" --- 11/2" 


Phone 314/ 567-8585 Fax 314/567-7334

CLC Series 

All Metal Locknut 

NKE/NKTE 

Nylon Insert Cap Locknut 

LOCK NUTS 

area 


All Metal, Grade C Top lock 

CLC series Automation Style Locknut. Heat Treated 

Hex Nylon Cap Locknuts 

Type NKE/NKTE Cap Nuts are designed for use in 

applications where, for reasons of safety or 

appearance, it is desirable to cover exposed bolt 

ends. Suitable for sealing internal or external 

pressures up to 80 PSI past the bolt threads. 

Purple/ Black/ White/ Gray Caps available 

1/4" --- 2" 

#4 --- 12" 

NKM/NKTM 


WC Series 

Nylon Insert Wing nut 

1660 Series 


LH1660 Series 


NMRH 


NCFMA Series 


LHCFM Series 


Hex Nylon Cap Locknuts 

Type NKE/NKTE Cap Nuts are designed for use in 

applications where, for reasons of safety or 

appearance, it is desirable to cover exposed bolt 

ends. Suitable for sealing internal or external 

pressures up to 80 PSI past the bolt threads. 

Purple/ Black/ White/ Gray Caps available 

Locking Wing Nuts, Nylon Insert 

Only locking device with Nylon Insert that may be 

installed and backed off by hand 

Miniature Hex Nylon Inserts 

Radar, radio equipment, electronics, computers, 

switch instruments, and related products where 

design requires miniaturization and reduced 

installation clearance 

All Metal, Miniature Hex Lock Nuts 

Where design requires miniaturization and reduced 

installation clearance where heat is greater than 

250 F or subject to an acidic application 

Reduced Hex Nylon Insert Locknuts 

Across flats hexagons are undersized Nut 

standards. They are offered for use for applications 

where wrench clearances are limited 

Miniature Clinch Flush Mounting Nylon 

Type NCFMA Parts used in applications involving 

installation in thin aluminum, soft steel sheets or 

plates having small mounting areas making the use 

of a Miniature Fixed Nut desirable 

All Metal Miniature Flush Mounting 

Type LHCFM Parts used in applications involving 

installations in thin aluminum, soft steel sheets or 

plates having small mounting areas making the use 

of a Miniature Fixed Nut desirable 

Used in applications where heat is greater than 250 

F or subject to an acidic application 


Phone 314/ 567-8585 Fax 314/567-7334 

#4 --- 12" 

#5 --- 12" 

#0 --- #4 

#2 --- #6 

#6 --- 1/4" 

#2 --- #10 

#2 --- 1/4" 

NC Series Clinch Hex Nut Nylon Insert Locknut #4 --- 5/16"


ND Series 


NKCFM Series 


BRN Series 


LOCK NUTS 

Captive Self Locking Fastener Installed In 

Aluminum or soft sheet steel. Provides load bearing 

threads in sheet metal and offers a reliable method 

of blind fastening. Available in six different shank 

lengths per diameter size. 

Spline Nylon Insert Locknuts 

A self Wrenching Nut designed for either blind hole 

application or where maintenance can be facilitated 

by the use of a captive fastener. 

Miniature Clinch Flush Mounting Nylon 

The Nylon Cap covers protruding threads in an 

NCFMA application. 

Bearing Retainer Nylon Insert Locknut 

Excellent for bearing applications where space is 

limited: Cylinders, Bearing Race Retainers, Pinion 

Shafts. 

M2DN (DIN982) Metric Nylon Insert Locknuts To DIN 982 

Steel Class 6, 8, & 10. 

M5DN (DIN985) Metric Nylon Insert Locknuts To DIN 985 

Steel Class 6, 8, & 10 

Brass 

Stainless Steel A2 (18/8) & A4 (316) 

Misc. Metric Series Metric Hex Nylon Insert Locknuts 

DIN 6924 (ISO 7040) Class 8 & 10 

Metric Hex Nylon Insert Flange Nuts 

DIN 6926 (ISO 7043) Class 8 & 10 

KL Series 

All Metal Assembly 

SL Series 


TL Series 


#8 --- 1/2" 

#2 --- #10 

SAE#N03 -- 

SAE#AN15 -- 

AN18 

M5 --- M24 

M3 --- M30 

M4 --- M10 

M2.5 --- M10 

M5 --- M30 

M5 --- M20 

Hex Nut/Tooth Washer Locknut Assembly #4 --- 1/2 

Including Small 

All metal serrated flange Hex Locknut 

Serrations on bottom of Flange cause large bearing 

surface diameter to lock into mating surface 

Reversible Hex All Metal Locknuts 

Finished Hex Nut pattern with reversible locking 

feature on center of Hex flats. 

#10 --- 1/2" 

#10 --- 1" 


Phone 314/ 567-8585 Fax 314/567-7334

Other Definitions 

HEX LOCK NUTS 

Prevailing-Torque Types 

All Metal, One Piece 

LOCK NUTS 

TRADE NAMES: "Two-Way", "Reversible", "Center lock" 

1, 2 or 3 round, rectangular or other shaped indentations compressed onto the flat 

sides of the nut distorts the internal threads causing a controlled locking action when 

engaged with external mating threads. 

For use with Grade 2 bolts usually supplied plated 

For simple, inexpensive locknut applications 

TRADE NAMES: "Stover", "Cone lock", "Uni-Torque", "Crown Lock" 

During the manufacturing process, applying pressure on the outside of the nut 

deforms the internal threads. The deformed threads produce a friction fit with the 

external threads of the bolt. This friction fit is well controlled and induces a locking 

action that allows for temperature and vibration variations. 

Elliptical threads (the locking feature) are formed in the manufacturing process by 

applying pressure to the sides of the nut near the top. 

This nut is indented directly on the top surface to deform the threads. This locking 

feature works on the same principle as the one above, giving the same results. 

Compression to the sides and the collar area form the elliptical threads that assure 

the locking fit. 

The most popular material for the above nuts is grade "8" or "C" and serves grade 

2, 5 and 8 bolts. 

® Collarlok, ESlok and Whiz Lock are registered trademarks of Maclean-ESNA. 


Phone 314/ 567-8585 Fax 314/567-7334

FASTENER LINE CARD 

• A325M, A407M BOLTS 

• ACME THREADED FASTENERS 

• ACORN NUTS/DOME NUTS 

• ADAPTERS 

• AEROSPACE FASTENERS 

• AIRCRAFT FASTENERS 

• ALLTHREAD ROD 

• ALUMINUM FASTENERS 

• ANCHOR BOLTS 

• ANCHOR, DROP-IN 

• ANCHOR, CONCRETE 

• ANCHOR, MACHINERY OR EQUIPMENT 

• ANCHOR, SELF LOCKING 

• ANCHOR, STUD TYPE 

• ANCHORS, CONCRETE 

• ANCHORS, MOLLY & RAWLPLUG 

• ANGLE JOINTS & BALL STUDS 

• ASSORTMENTS, CUSTOM PACKAGED. 

• ASSORTMENTS, FASTENER 

• ASSORTMENTS, TOOLS 

• B7-ALLTHREAD & 2H NUTS 

• BALLS, PRECISION STEEL 

• BANC-LOK INSERTS 

• BEARING NUTS & WASHERS 

• BELLEVILLE SPRING WASHERS 

• BENZING U-CLIPS & RETAINING RINGS 

• BINDER POSTS & SCREWS 

• BLANKS, BOLT 

• BLIND RIVETS 

• BOLTS, MOST TYPES 

• BRASS FASTENERS 

• BRITISH SIZED FASTENERS 

• BRONZE FASTENERS 

• BUCKET BOLTS 

• BUMPER BOLTS 

• BUTTON HEAD SOCKET SCREWS 

• CABINETS, ASST. & STORAGE 

• CAGE NUTS 

• CAP NUTS 

• CAPACITIVE DISCHARGE STUDS 

• CAPI PLASTIC FASTENERS 

• CAPS 

• CAPS, PLASTIC FOR THREADS 

• CAPS, PLASTIC FOR TUBES 

• CAPSTAN HEAD SCREWS 

• CAPTIVE SCREWS 

• CAR BODY WASHERS 

• CARRIAGE BOLTS 

• CASTELLATED NUTS 

• CIRCLIPS & RETAINING RINGS 

• CLEVIS PINS & CLEVISE'S 

• CLIFA SELF-RIVETING NUTS 

• CLINCH NUTS 

• COLLARS, SHAFT; SOLID & SPLIT 

• CONDUIT THREAD (Pg, Metric, BSP) NUTS 

• CONICAL SPRING WASHERS 

• COPPER FASTENERS 

• COTTER PINS 

• COUNTER NUTS 

• COUPLING NUTS 

• CROSS DOWELS 

• CUSHIONING WASHERS 

• CUSTOM METRIC MACHINE WORK 

• CUSTOM PLATING & PAINTING 

• DISC SPRINGS 

• DISTANCE PIECES & SPACERS 

• DOME NUTS & ACORN NUTS 

• DOWEL PINS - MOST TYPES 

• DRILL ROD 

• DRIVE SCREWS 

• DUBO SEALING RINGS 

• DURLOK SERRATED FASTENERS 

• DURO-PT SCREWS FOR PLASTIC 

• EJECTOR & MOLD PINS 

• EJOT-PT SCREWS FOR PLASTIC 

• ELASTIC LOCK NUTS 

• ELASTIC LOCK NUTS, FLANGED 

• ELEVATOR BOLTS 

• ELTEC PLASTIC FASTENERS 

• ENSAT SCREW THREAD INSERTS 

• EXPANSION BOLTS 

• EXPANSION PLUGS 

• EXTENSION & COUPLING NUTS 

• EYE BOLTS & NUTS 

• E-Z LOK 

• FASTENER ASSORTMENTS & BINS 

• FASTENERS, ANCHOR BOLTS 

• FASTENERS, BOLTS, AIRCRAFT 

• FASTENERS, BOLTS, ALLOY 

• FASTENERS, BOLTS, ANCHOR 

• FASTENERS, BOLTS, CARRIAGE BOLTS 

• FASTENERS, BOLTS, CORROSION-RESISTING 

• FASTENERS, BOLTS, CUSTOM BOLTS 

• FASTENERS, BOLTS, EYE 

• FASTENERS, BOLTS, GALVANIZED BOLTS 

• FASTENERS, BOLTS, HEAT TREATED 

• FASTENERS, BOLTS, HEX/SQUARE HEAD BOLTS 

• FASTENERS, BOLTS, HEXAGON SOCKET BOLT 

• FASTENERS, BOLTS, HIGH STRENGTH 

• FASTENERS, BOLTS, MACHINE 

• FASTENERS, BOLTS, METRIC 

• FASTENERS, BOLTS, NONFERROUS, METALS 

• FASTENERS, BOLTS, PLASTIC 

• FASTENERS, BOLTS, SELF-LOCKING 

• FASTENERS, BOLTS, SELF-RETAINING 

• FASTENERS, BOLTS, STAINLESS 

• FASTENERS, BOLTS, STRUCTURAL BOLTS 

• FASTENERS, BOLTS, TEE 

• FASTENERS, BOLTS, U BOLTS 

• FASTENERS, BOLTS, WELDING 

Phone (314) 567-8585 Fax (314) 567-7334 


• FASTENERS, BOLTS 

• FASTENERS, OTHER METRIC 

• FASTENERS, OTHER PANEL 

• FASTENERS, OTHER PLASTIC 

• FASTENERS, OTHER QUICK OPERATING 

• FASTENERS, OTHER RETAINING RING 

• FASTENERS, OTHER SELF-SEALING 

• FASTENERS, OTHER SPRING 

• FASTENERS, OTHER THREADED INSERTS 

• FASTENERS, OTHER UNTHREADED 

• FASTENERS, OTHER WELDED 

• FASTENERS, OTHER 

• FASTENERS, THREADED 

• FASTENERS 

• FENDER WASHERS & BOLTS 

• FINISHING WASHERS 

• FLANGED BOLTS & NUTS 

• FLANGED HEX LOCK NUTS 

• FLAT HEAD SCREWS, MOST TYPES 

• FLAT KNURLED NUTS 

• FLAT KNURLED THUMB SCREWS 

• FLAT SOCKET HEAD CAP SCREWS 

• FLAT WASHERS 

• FLUTED KEYS 

• FREEZE PLUGS/EXPANSION PLUGS 

• FURNITURE HARDWARE 

• GREASE FITTINGS & ASSORTMENTS 

• GRIP RINGS 

• GROOVED PINS 

• HAMMER DRIVE SCREWS 

• HANGER BOLTS 

• HANGERS 

• HARDWARE, ELECTRONICS 

• HELICOIL, E-Z LOK, KEENSERT, RECOIL, KATO 

• HEX CAP NUTS 

• HEX FLANGE BOLTS & NUTS 

• HEX HEAD CAP SCREWS, MOST TYPES 

• HEX HEAD PIPE PLUGS 

• HEX HEAD SET SCREWS 

• HEX HEAD SHOULDER BOLTS 

• HEX LOCK NUTS 

• HEX NUTS WITH CONICAL WASHERS 

• HEX NUTS; REGULAR, LOCK, JAM 

• HEXAGON BAR STOCK 

• HIGH NUTS 

• HIGH STRENGTH FASTENERS 

• HOLLOW SCREWS 

• HOOK BOLTS 

• INCONEL & TITANIUM FASTENERS 

• INSERT NUTS 

• INSERTS, THREADED 

• INSERTS, THREADLESS 

• INSERTS 

• JAM NUTS 

• KEENSERTS 

• KEPS NUTS 

• KEY STOCK & MACHINE KEYS 

• KEYED WASHERS 

• KEYS, SHAFT & WOODRUFF 

• KEYSERT SCREW THREAD INSERTS 

• KING-STOP PUSH IN RIVETS 

• KM/MB BEARING LOCKNUTS & WASHERS 

• KNURLED HEAD SCREWS & NUTS 

• KNURLED KNOBS 

• KORREX PLASTIC FASTENERS 

• LAG SCREW S 

• LARGE HEAD SCREWS 

• LIFTING RING BOLTS & NUTS 

• LINCH PINS 

• LOCK NUTS, ALL METAL 

• LOCK NUTS, MOST TYPES 

• LOCK WASHERS, MOST TYPES 

• LOCK WASHERS, RIBBED 

• LOW HEAD SOCKET CAP SCREWS 

• LOW NUTS/JAM NUTS/PANEL NUTS 

• MACHINE SCREWS, MOST TYPES 

• MARINE METRIC HARDWARE 

• METRIPAK PACKAGED FASTENERS 

• MANUFACTURE OF METRIC FASTENERS 

• MICRO SIZE SCREWS (BELOW 1 mm) 

• NAILS 

• NORD-LOCK & JAC LOCK WASHERS 

• NUTS, AIRCRAFT 

• NUTS, ALUMINUM 

• NUTS, ANCHOR AND PLATE 

• NUTS, BRASS 

• NUTS, CAP OR ACORN 

• NUTS, CASE HARDENED 

• NUTS, CASTELLATED 

• NUTS, CLINCH 

• NUTS, CLIP-ON NON-LOCKING METRIC NON- 

LOCKING 

• NUTS, CLIP-ON SELF-LOCKING METRIC SELF- 

LOCKING 

• NUTS, CLIP-ON 

• NUTS, CORROSION RESISTANT 

• NUTS, FLANGE 

• NUTS, HEX PANEL 

• NUTS, LOCKING 

• NUTS, MACHINE, HEX 

• NUTS, METRIC 

• NUTS, MOST TYPES 

• NUTS, PLASTIC 

• NUTS, PRE-ASSEMBLED NUT AND LOCK WASHER 

• NUTS, RETAINING 

• NUTS, RIVETS 

• NUTS, SELF-SEALING 

• NUTS, STAINLESS, STEEL 

• NUTS, TEE, MACHINE TABLE 

• NUTS, WELD 

• NUTS, WING 

• NUTS 

• NUTSERTS 

• NYLON FASTENERS 

• NYLON INSERT LOCKNUTS 

Phone (314) 567-8585 Fax (314) 567-7334 


• NYLON PATCH FASTENER S 

• NYLON PELLETED FASTENERS 

• NYLON STRIP LOCKED FASTENERS 

• NYLON TIPPED FASTENERS 

• NYLTITE SEALING RINGS 

• PAL LOCK NUTS 

• PANEL NUTS (KNURLED) 

• PERMA-THREAD SCREW THREAD INSERTS 

• PHILLIPS DRIVE MACHINE SCREWS 

• PINS, (DOWEL, GROOVE, ROLL, SPIRAL, TAPER) 

• PINS, CLEVIS 

• PINS, COILED 

• PINS, COTTER 

• PINS, DOWEL, TAPER & PULL 

• PINS, DOWEL 

• PINS, GROOVED 

• PINS, MOST TYPES 

• PINS, QUICK RELEASE 

• PINS, ROLL & SPIRAL 

• PINS, SELF-LOCKING 

• PINS, SPRING 

• PINS, STAINLESS, STEEL 

• PINS, TAPER 

• PINS, TENSION 

• PINS, WELD 

• PINS 

• PLASTIC & NYLON FASTENERS 

• PLASTITE THREAD FORMING SCREWS 

• PLATE NUTS 

• PLOW BOLTS 

• PLUGS, CAPS 

• PLUGS, CLOSURES 

• PLUGS, MAGNETIC AND NONMAGNETIC 

• PLUGS, SOCKET HEAD & HEX HEAD 

• PLUGS, SQUARE HEAD 

• PLUGS 

• POLYAMIDE PLASTIC FASTENERS 

• POP RIVETS/BLIND RIVETS 

• POZIDRIVE MACHINE SCREWS 

• PRE-PACKAGED FASTENERS 

• PROJECTION WELD STUDS 

• PROTECTION CAPS & PLUGS 

• QUARTER TURN SCREWS 

• QUICK ACTION KNURLED KNOBS 

• RAMPA TEE NUTS & INSERTS 

• RECOIL SCREW THREAD INSERTS 

• RETAINING RING & CIRCLIPS 

• RIBBED LOCK WASHERS 

• RING BOLTS & NUTS 

• RIPP SERRATED BOLTS & NUTS 

• RIVET NUTS 

• RIVET (CLINCH) BUSHES & STUDS 

• RIVETS, BLIND 

• RIVETS, MOST TYPES 

• RIVETS, PUSH-IN BLIND RIVETS 

• RIVETS, SEMI-TUBULAR 

• RIVETS, SOLID 

• RIVETS, TUBULAR 

• RIVETS 

• RODS, PLASTIC 

• RODS, THREADED 

• ROLL, SPIRAL, & SPRING PINS 

• ROUND NUTS WITH DRIVE HOLES 

• ROUND KNURLED NUTS 

• ROUND SLOTTED NUTS 

• SCHNORR WASHERS 

• SCREW CHEKR 

• SCREW MACHINE PARTS, METAL 

• SCREW MACHINE PARTS, PLASTIC 

• SCREW MACHINE PARTS 

• SCREW MACHINE PRODUCTS 

• SCREW THREAD INSERTS 

• SCREWS FOR PLASTIC MATERIALS 

• SCREWS, ACME 

• SCREWS, ALLOY STEEL 

• SCREWS, ALUMINUM 

• SCREWS, BALL 

• SCREWS, COLD-FORMED 

• SCREWS, CORROSION RESISTING 

• SCREWS, DRIVE 

• SCREWS, HEAT TREATED 

• SCREWS, LOCKING 

• SCREWS, METRIC 

• SCREWS, MOST TYPES 

• SCREWS, PLASTIC 

• SCREWS, ROOFING 

• SCREWS, SELF-DRILLING 

• SCREWS, SELF-LOCKING 

• SCREWS, SET, HEADLESS 

• SCREWS, SOCKET 

• SCREWS, STAINLESS, STEEL 

• SCREWS, STEEL 

• SCREWS, THREAD CUTTING 

• SCREWS, THUMB 

• SCREWS, WELD 

• SCREWS, WOOD 

• SCREWS 

• SEAL-LOCK SEALING NUTS 

• SEEGER RETAINING RINGS 

• SELF DRILLING SCREWS, TEKS 

• SELF RETAINING NUTS 

• SELF TAPPING SCREW. THREAD INSERTS 

• SELF TAPPING SCREWS, MOST TYPES 

• SEMS, SCREW/WASHER ASSEMBLIES 

• SERPRESS HEX LOCK NUTS 

• SERRATED LOCK WASHERS 

• SERRATED SPRING PINS 

• SET SCREW COLLARS 

• SET SCREWS, BRASS TIPPED 

• SET SCREWS, MOST TYPES 

• SET SCREWS, NYLON TIPPED 

• SHAFT LOCKNUTS & WASHERS 

• SHAFT SPACERS 

• SHAFTING & SHAFT KEYS 

Phone (314) 567-8585 Fax (314) 567-7334 


• SHEAR LOC KNOBS & THUMB SCREWS 

• SHEET METAL SCREWS 

• SHIM WASHERS & SHIM STOCK 

• SHOULDER BOLTS, MOST TYPES 

• SLOTTED HEAD SCREWS, MOST TYPES 

• SLOTTED HEX HEAD SCREWS 

• SLOTTED MACHINE SCREWS 

• SLOTTED NUTS 

• SLOTTED PAN HEAD SHOULDER SCREWS 

• SLOTTED SCREW PLUGS 

• SLOTTED SET SCREWS 

• SOCKET HEAD SCREWS, MOST TYPES 

• SOCKET HEAD FLANGE SCREWS 

• SOCKET HEAD PLUGS 

• SOCKET HEAD SHOULDER BOLTS 

• SOCKET SET SCREWS-KNURLED POINT 

• SONIC LOK/BANC LOK INSERTS 

• SPACERS & STANDOFFS 

• SPANNER NUTS 

• SPECIAL METRIC FASTENERS 

• SPEDEC SELF-DRILLING SCREWS 

• SPEEDNUTS & CLIP NUTS 

• SPHERICAL NUTS & WASHERS 

• SPIRAL PINS & ROLL PINS 

• SPLINE HEAD SCREWS, MOST TYPES 

• SPOT WELD NUTS 

• SPRING, ROLL & SPIRAL PINS 

• SPRING WASHERS 

• SPRINGS, BELLEVILLE DISC 

• SPRINGS, WIRE & DISC 

• SQUARE BEVELED WASHERS 

• SQUARE FLAT WASHERS 

• SQUARE HEAD PIPE PLUGS 

• SQUARE HEAD SCREWS 

• SQUARE NUTS 

• SQUARE WELD NUTS 

• STAINLESS STEEL FASTENERS 

• STANDOFFS & SPACERS 

• STAR KNOB KITS, SHEAR LOC 

• STAR WASHERS 

• STEEL CONSTRUCTION FASTENERS 

• STEEL SHAPES, SEE METALS SECTION 

• STEP STUDS/DUAL DIAMETER STUDS 

• STONE BOLTS 

• STORAGE & ASSORTMENT BOXES 

• STRIPPER BOLTS, SHOULDER BOLTS 

• STUD BOLTS 

• STUDS & THREADED PINS 

• STUDS, ALLOY AND STAINLESS, STEEL 

• STUDS, STEEL 

• STUDS, STEEL, MACHINE SETUP 

• STUDS 

• SUPADRIV SCREWS 

• SWIF CLINCH NUTS 

• T-HEAD BOLTS 

• T-NUTS FOR MACHINE TABLES 

• T-NUTS WITH PRONGS FOR WOOD 

• TAB WASHERS 

• TAMPER RESISTANT FASTENERS 

• TAPER KEYS 

• TAPER PINS & PULL TAPER PINS 

• TAPERED SQUARE WASHERS 

• TAPPING SCREWS 

• TAPTITE THREAD FORMING SCREWS 

• TEE WELD NUTS 

• TEKS, SELF DRILLING SCREWS 

• TENSILOK/DURLOK BOLTS & NUTS 

• TENSION PINS/TENSION BUSHES 

• THACKERAY WASHERS 

• THERMAG HEX LOCK NUTS 

• THREAD CUTTING SCREWS 

• THREADED DOWEL/TAPER PINS 

• THREADED INSERTS 

• THREADED STUDS, ROD & PINS 

• THREADED TAPER & DOWEL PINS 

• TITANIUM FASTENERS 

• THUMB SCREW KNOBS 

• THUMB SCREWS 

• TOP-ROC SPACING SCREWS 

• TORX DRIVE FASTENERS & TOOLS 

• TP-200 HARDENED FLAT WASHERS 

• TRAPEZOIDAL THREADED ROD & NUTS 

• TRIANGLE HEAD FASTENERS 

• TRUSS HEAD MACHINE SCREWS 

• TUBTARA BLIND RIVET NUTS 

• TURNBUCKLE NUTS/TURNBUCKLES 

• TWELVE POINT HEAD SCREWS 

• U-BOLTS 

• V-RINGS, SEEGER 

• WASHERS WAVY & CURVED 

• WASHERS, (BELLEVILLE, CURVED, THRUST, WAVE) 

• WASHERS, CRINKLE 

• WASHERS, FASTENERS AND SPACERS 

• WASHERS, FASTENERS, AND SPACERS, 

BELLEVILLE TYPE 

• WASHERS, FASTENERS, AND SPACERS, FELT, 

FIBER, COMPOSITION 

• WASHERS, FASTENERS, AND SPACERS, LOCK 

• WASHERS, FASTENERS, AND SPACERS, PLAIN 

• WASHERS, FASTENERS, AND SPACERS, PLASTIC 

• WASHERS, FASTENERS, AND SPACERS, SEALING 

• WASHERS, MOST TYPES 

• WASHERS, TOOTHED 

• WELD NUTS & STUDS 

• WHEEL NUTS & STUDS 

• WHITWORTH SIZED FASTENERS 

• WING NUTS & SCREWS 

• WIRE CIRCLIPS 

• WOOD SCREWS 

• WOODRUFF KEYS 

Phone (314) 567-8585 Fax (314) 567-7334 


RATCHET (XMAS TREE) FASTENERS 

designed to provide an economical fastening method over a wide 

range of panel thicknesses and materials. The easy hand installation 

assures a quick assembly and a strong and reliable finished product. 

NYLON ARROW CLIPS 

molded nylon fasteners that feature an inexpensive fast method to 

hand assemble metal, wood, plastic, composition, or other thin 

gauge materials. 

NYLON KEY HOLE CLIPS 

key-hole shaped interior allows the part to collapse more completely 

for easy assembly with finger pressure, and the tapered, bullet-style 

point slides into any hole easily. The angled panel lock section takes 

up slack in panels to provide for a tight assembly. The design allows 

for a relatively large clip diameter to hole size ratio, resulting in 

higher retention force. Parts can be tooled for a large variety of hole 

and panel variations. 

NYLON PUSH-IN FASTENERS 

provide an inexpensive, fast, convenient method to join plastic, light 

sheet metal, insulating materials, circuit boards, or any other thin, 

lightweight material. They can also be used as push-in glides or as 

bumpers. 

SNAP CLIPS 

combination of Celcon Acetal material, and a resilient body design, 

give these parts a positive "snap" and a more definite grip when assembled 

into place. Designed for other hole sizes from 1/8" to 1/4" 

and panel thickness from 1/32" to 3/16". 

CLOSED SCREW GROMMET NUTS 

provide a low cost, positive connection for thin gauge materials while 

they eliminate the chance of cross-threading. The specially designed 

closed Poly Grommet snaps into a pre-punched square hole. As the 

self-threading sheet metal screw tightens, the Grommet expands 

and securely locks the screw and assembled parts in place. 

2369 Schuetz Road St. Louis, Missouri 63146 Phone 314/567-8585 Fax 314/567-7334

Overhead Sectional 

Garage Door Hardware 

Commercial and Residential 

Your Material 

Management 

Supply Partner 

If you are looking for a 

new source for your mill 

quantity roll-formed or 

stamped products, give 

Purchase Partners an 

opportunity to 

supply your 

requirements. 

Let Purchase 

Partners earn 

your business 

with proven 

quality, on-time 

deliveries and 

competitive pricing. 

Also providing castings, 

forgings, plastic injected 

parts, rivets, fasteners 

and much more. 

STEEL ROLL FORMED AND STAMPED PRODUCTS 

• Garage Door Hinge 

• Top Roller Bracket 

• Bottom Lift and Roller Bracket 

• Universal Lift Handles 

OTHER HARDWARE AVAILABLE 

• Special Stampings 

• Die Castings and Forgings and Springs 

• Plastic Injection Parts 

• Small Steel Fabricated Parts 

• Knurled and Rib Necked Threaded Parts 


2369 Schuetz Road 

Saint Louis, Missouri 63146 

Phone: 314-567-8585 

Fax: 314-567-7334 

Email: sales@purchasepartners.com 

FASTENER HARDWARE 

• Spring Steel Speed Nuts 

• Blind Rivets 

• Semi-Tubular Rivets 

• Lock Nuts, Captive, Stamped 

• Cap Screws & Bolts 

• Sheet Metal Screws and Self-Drillers 

• Anchors and Miscellaneous Hardware

Engineered 

Spring Steel 

Your Material Management 


If you are looking for a new 

source for your engineered 

spring steel requirements, give 

Purchase Partners an 

opportunity to offer you an 

innovative supply solution. 

Let Purchase Partners earn 

your business with proven 

quality, 

on-time deliveries 

and competitive pricing. 

Also providing many other 

variations of spring steel 

fasteners (not illustrated) and 

much more. 

FLAT NUT 

(single thread) 

J-NUT 

(single thread) 

CAP NUTS 

CAGE NUT 

U-NUT 

(multiple thread) 

DART 

CLIPS 

Flat nuts are a one-piece, self-locking, 

single thread fastener that replaces 

threaded nuts and lock washers. 

Also available in Round, W-Type, Twin Type, Angle 

Type. 

Single thread, J-Nuts (pictured) and U- 

Nuts snap over the edge of panels or 

over center holes, holding the nut in 

place for blind applications. 

For shaft Diameters ranging from .125” 

to .500”, this fastener can be used to 

secure wheels to axels, as a bumper or 

spacer, or to cover studs or shaft ends 

to eliminate safety hazards. 

Caged nut retainers combine the advantages 

of spring steel parts with a multithread 

solution. These nuts snap into 

location and can float for easy alignment. 

This style nut snaps over the edge of 

panels or center holes, holding the nut 

in place for blind applications and afford 

the added strength of multiple threads. 

Also available as a J-Nut. 

When installing this fastener, the dart 

portion of the clip compresses and 

snaps back to form when placed in the 

hole. This style (different variations) can be 

used for sealing strip and liner panels. 




Phone: 314-567-8585 

Fax: 314-567-7334 


TUBULAR 

NUT 

CABLE 

CLIPS 

Designed to mate with unthreaded 

studs and rivets where there is access 

from the front side only. 

Available in removable or permanent lock types. 

The cable clip will receive a wide range 

of sizes of wire, cable and tube. This 

part is designed to keep wiring safely 

away from moving parts.

Engineered 

Spring Steel Fastener 

Solutions 

Your Material 

Management 


If you are looking for 

a new supply partner 

for your engineered 

fastener requirements, 

give Purchase Partners 

an opportunity to meet and 

exceed your expectations. 

Purchase Partners, 

earning your business 

with proven quality, 

on-time deliveries and 

competitive pricing. 




Phone: 314-567-8585 

Fax: 314-567-7334 


STEEL ROLL FORMED AND STAMPED PRODUCTS 

• Speed Nuts 

• Clips - One Piece Self Sufficient 

• Hose, Harness Clamps 

• Cable Wire and Tube Clips 

• Retaining Rings 

• Single Thread, One Piece, Self Retaining 

• Single Thread, One Piece, Self-Locking 

• Stud Receivers, One Piece, Self-Locking 

• Cage Nuts 

• Plastic Fasteners 

• Panel Fasteners 

• Lock nuts 

• Self Threading Nuts 

• Push Nut Bolt Retainers 

• Metric Fasteners

Nuts Spring Nuts U-Type 

TINNERMAN ® NUT EQUIVALENTS 

P 

W 

L 

T 

Standard 

Tinnerman ® Part 

Number 

Screw Size 

STEEL SPRING NUTS "U" TYPE 

Eaton Corp.*, 

SAE J891 

P L W T PERFORMANCE DATA 

Panel Range Length Width 

Material 

Thickness 

Recommended 

Installation 

Torque (lb.-in.) 

Max 

Ultimate 

Tensile 

Strength (lb.) 

Min 

C8090-632-4 6/32 .025-.040 .48 .50 .017 6 156 

C8091-632-4 6/32 .045-.062 .48 .50 .017 6 156 

C8093-632-4 6/32 .045-.062 .65 .31 .017 6 156 

C8094-632-4 6/32 .025-.040 .82 .31 .017 6 156 

C8095-632-4 6/32 .045-.062 .82 .31 .017 6 156 

C8096-6-4 6A or B .025-.040 .48 .50 .025 12 425 

C8097-6-4 6A or B .045-.062 .47 .50 .025 12 425 

C8100-6-4 6A or B .025-.040 .81 .31 .025 12 425 

C8101-6-4 6A or B .045-.062 .82 .31 .025 12 425 

C8102-832-4 8/32 .025-.040 .52 .50 .017 8 189 

C8103-832-4 8/32 .045-.062 .52 .50 .017 8 189 

C8105-832-4 8/32 .045-.062 .67 .41 .017 8 189 

C8106-832-4 8/32 .025-.040 .86 .41 .017 8 189 

C8107-832-4 8/32 .045-.062 .87 .41 .017 8 189 

C8108-8-4 8A or B .025-.040 .52 .50 .028 20 534 

C8109-8-4 8A or B .045-.062 .52 .50 .028 20 534 

C8112-8-4 8A or B .025-.040 .85 .41 .028 20 534 

C8113-8-4 8A or B .045-.062 .86 .41 .028 20 534 

C8114-1024-4 10/24 .025-.040 .58 .63 .022 14 274 

C8115-1024-4 10/24 .045-.062 .56 .63 .022 14 274 

C8117-1024-4 10/24 .045-.062 .76 .38 .022 14 274 

C8118-1024-4 10/24 .025-.040 .95 .38 .022 14 274 

C8119-1024-4 10/24 .045-.062 .95 .38 .022 14 274 

C8120-10-4 10A or B .025-.040 .56 .63 .031 35 672 

C8121-10-4 10A or B .045-.062 .56 .63 .031 35 672 

C8123-10-4 10A or B .045-.062 .76 .50 .031 35 672 

C8124-10-4 10A or B .025-.040 .96 .50 .031 35 672 

C8125-10-4 10A or B .045-.062 .95 .50 .031 35 672 

Description 

Applications/ 

Advantages 

Material 

Hardness 

Plating 

A self-retaining spring steel fastener manufactured in the shape of a "U", enabling it to snap into place over the edge of a panel and hold 

its position. 

Same advantages as a J-Type nut, but used where the lower leg of the spring nut requires full bearing. 

SAE 1050 or higher carbon steel. 

For material thickness 0.017-0.024 in., Rockwell 30N C40 minimum, C50 maximum. 


See Appendix-A for information on the plating of steel spring nuts. 

*The Eaton Corporation is the original writer of these spring nut dimensions.

J-Type 

Spring Nuts 

Nuts 


P 

L 

W 

T 

Tinnerman ® 

Part Number 

Screw Size 

STEEL SPRING NUTS "J" TYPE 

Eaton Corp.*, 

SAE J891 

P L W T PERFORMANCE DATA 

Panel Range Length Width 

Material 

Thickness 

Recommended 

Installation 

Torque (lb.-in.) 

Max 

Ultimate 

Tensile 


Min 

C8019-632-4 6/32 .025-.040 .47 .50 .017 6 156 

C8020-632-4 6/32 .045-.062 .47 .50 .017 6 156 

C8022-632-4 6/32 .045-.062 .63 .31 .017 6 156 

C8023-632-4 6/32 .025-.040 .81 .31 .017 6 156 

C8024-632-4 6/32 .045-.062 .81 .31 .017 6 156 

C8025-6-4 6A or B .025-.040 .47 .50 .025 12 425 

C8026-6-4 6A or B .045-.062 .47 .50 .025 12 425 

C8029-6-4 6A or B .025-.040 .81 .31 .025 12 425 

C8030-6-4 6A or B .045-.062 .81 .31 .025 12 425 

C8031-832-4 8/32 .025-.040 .53 .50 .017 8 189 

C8032-832-4 8/32 .045-.062 .52 .50 .017 8 189 

C8035-832-4 8/32 .025-.040 .87 .41 .017 8 189 

C8036-832-4 8/32 .045-.062 .87 .41 .017 8 189 

C8037-8-4 8A or B .025-.045 .53 .50 .028 20 534 

C8038-8-4 8A or B .045-.062 .53 .50 .028 20 534 

C8041-8-4 8A or B .025-.040 .87 .41 .028 20 534 

C8042-8-4 8A or B .045-.062 .86 .41 .028 20 534 

C8043-1024-4 10/24 .025-.040 .59 .63 .022 14 274 

C8044-1024-4 10/24 .045-.062 .59 .63 .022 14 274 

C8045-1024-4 10/24 .025-.040 .79 .38 .022 14 274 

C8048-1024-4 10/24 .045-.062 .97 .38 .022 14 274 

C8043-1032-4 10/32 .025-.040 .59 .63 .017 - - 

C8049-10-4 10A or B .025-.040 .58 .63 .031 35 672 

C8050-10-4 10A or B .045-.062 .58 .63 .031 35 672 

C8053-10-4 10A or B .025-.040 .97 .50 .031 35 672 

C8054-10-4 10A or B .045-.062 .97 .50 .031 35 672 

Description 

Applications/ 

Advantages 

Material 

Hardness 

Plating 

A self-retaining spring steel fastener manufactured in the shape of a "J", enabling it to snap into place over the edge of a panel and hold its 

position. 

Same advantages as a flat-type spring nut, but more versatile. Can reduce assembly time by eliminating such steps as welding and 

riveting. Nut surface will accept paint without clogging inside the thread. 

SAE 1050 or higher carbon steel. 



See Appendix-A for information about the plating of steel spring nuts. 

*The Eaton Corporation is the original designer of these spring nut dimensions.

Nuts Spring Nuts Flat Type 


W 

L 

T 

STEEL SPRING NUTS FLAT TYPE 

Eaton Corp.*, 

SAE J891 

L W T PERMORMANCE DATA 

Tinnerman ® Part 

Number 

Screw Size 

Length 

Width 

Material 

Thickness 

Recommended 

Installation Torque 

(lb.-in.) 

Max 

Ultimate Tensile 


Min 

C105SS-440-4 4/40 .44 .25 .012 3 100 

C430-1032-4 10/32 .75 .44 .017 - - 

C7000-4-4 4A or B .38 .25 .022 9 300 

C7000-632-4 6/32 .44 .28 .017 6 156 

C7000-6-4 6A or B .50 .31 .025 12 425 

C7000-832-4 8/32 .50 .31 .017 8 189 

C7000-8-4 8A or B .63 .41 .028 20 534 

C7000-1024-4 10/24 .63 .38 .022 14 274 

C7000-10-4 10A or B .75 .50 .031 35 672 

Description 

A one piece, self-locking fastener made of spring steel. The perimeter of the nut is rectangular in shape. Some variations have an arched 

base and/or corners which are trimmed or turned. 

Applications/ 

Advantages 

It reduces inventories by eliminating need for lockwashers and spanners. Its single thread engagement design makes it easy to apply and 

remove. Parts are reusable. Provides the correct amount of spring tension without damaging enamel, glass or porcelain surfaces. 

Material 

SAE 1050 or higher carbon steel, with the exception of part# C105SS-440-4 which is made of stainless steel. 

Hardness 

(Steel) 



Plating 

See Appendix-A for information on the plating of steel spring nuts. 

*The Eaton Corporation is the original writer of these spring nut dimensions.

PURCHASE PARTNERS 

SPRING STEEL 

FASTENERS 

Standard Finishes For Tinnerman ® Fasteners. 

Listed below are the most commonly used finishes available for protective coating and rust-proofing Tinnerman 

Brand Fasteners. To specify desired finish use corresponding dash number, shown below as the last dash number, 

affixed to the Part Number. Examples: C 183-012-27, C 1053-012-4, C 1158-5610-1 FINISH 




Phone: 314-567-8585 

Fax: 314-567-7334 


Tinnerman® is the registered trademark of 

Tinnerman Palnut Engineered Products LLC 

-27 

(Soluble Oil 

Dipped) 

-4 

(Phosphate and 

Oil) 

-1 

(Phosphate and 2 

Coats Olive Drab 

Paint) 

-67 

(Phosphate and 2 

Coats Aluminum 

Paint) 

-373 

(Phosphate, 2 

Coats of Paint and 

Oil) 

Natural. 

Black. 

Olive drab 

Aluminum color 

smooth appearance. 

Bright green. 

SALT SPRAY TEST 

5% solution at 95°F. Ferrous parts: first 

rust spots after 1 hour, end point (1116" dia. 

rust spots) after 21/2 hours. Non-ferrous 

parts: corrosion will be normal for the plain 

finish of the material. 

5% solution at 95°F. First rust spots after 

32 hours. End point (V16" dia. rust spots) 

after 40 hours 


48 hours. End point (1/16" dia. rust spots) 

after 100 hours 



after 100 hours. 




NOTE: The following electroplate finishes are limited to only a few parts, such as Tubular Type Clips and 

Tube Clamps. Please do not specify these finishes for other types of Tinnerman Fasteners without the 

approval of our engineering department. 

-600 

(Zinc Mechanical 

plate) 

-38 

(Zinc Electroplate) 

-24 

(Cadmium Electroplate) 

Satin Silver Color 

Silver color. Slight 

discoloration from 

baking may occur 

Silver color. Slight 

discoloration from 

baking may occur. 

5% solution at 95°F. End point (red rust) 


5% solution at 95°F. End point (red rust) 


5% solution at 95°F. First rust spont after 

48 hours. End point (V16" dia. rust spots) 

after 75 hours.

Flush 

Seating 

Pipe Plugs 

Sockets 

D 

J 

T 

L 

G 

SOCKET PIPE PLUGS -FLUSH TYPE 

ANSI 

B1.20.3 

Nominal 

Size 

D 

Nominal 

Outside 

Diameter 

Threads 

Per Inch 

J T G L 

Hex 

Socket 

Size 

Key 

Engagement 

Wall 

Thickness 

Overall Length 

Min Min Max Min 

Tightening 

Torque 

(Inch - Lbs) 

Tap Drill 

Size* 

1/16 0.307 27 5/32 .140 .052 .250 .235 150 15/64 

1/8 0.401 27 3/16 .140 .049 .250 .235 250 21/64 

1/4 0.529 18 1/4 .218 .045 .406 .391 600 27/64 

3/8 0.667 18 5/16 .250 .040 .406 .391 1200 9/16 

1/2 0.830 14 3/8 .312 .067 .531 .516 1800 11/16 

3/4 1.041 14 9/16 .312 .054 .531 .516 3000 57/64 

1 1.302 11-1/2 5/8 .375 .112 .656 .641 4200 1-1/8 

1-1/4 1.647 11-1/2 3/4 .437 .102 .656 .641 5400 37.5MM 

*Taper reaming after drilling is recommended for tapping ease and to give fully formed, uniform threads. 

Description 

A flush type plug is one having a tapered (0.875" diametral per 12") thread extending its entire length and designed to provide a flush 

condition with a standard tapped hole (0.750" diametral per 12"). Both ends of the plug shall be flat and chamfered approximately 45°. 

The chamfer shall extend slightly below the root of the thread, and the edge between flat and chamfer shall be slightly rounded. Six 

equally spaced identification grooves are located equidistant between corners of the hex socket and edge of the chamfer (Note: on the 

1/16-27 plug, 3 identification grooves are permitted because of limited space). 

Applications/ 

Advantages 

Material 


A high pressure seal is achieved through the difference in taper, with dimensions precalculated to provide a higher sealing load near the 

large end of the plug and the threads near the top of the tapped hole. The flush type plug is preferred where high pressures are 

encountered and where protrusion is undesirable. 

High grade alloy steel 

Pipe plugs shall be heat-treated by quenching in oil from above the hardening temperature and tempered to achieve the hardness 

requirement listed below. 

Hardness Rockwell C36 - 43 

Finish 

Plugs are supplied with a standard black finish.

Sockets Pipe Plugs Dry Seal 

D 

J 

T 

L 

G 

SOCKET PIPE PLUGS -DRY SEAL 

ANSI 

B1.20.3 

Nominal 

Size 

D 

Nominal 

Outside 

Diameter 

Threads 

Per Inch 

J T G L 

Hex 

Socket 

Size 

Key 

Engagement 

Wall 

Thickness 

Overall Length 

Min Min Max Min 

Tightening 

Torque 

(Inch - Lbs) 

Tap Drill 

Size* 

1/16 0.3120 27 5/32 .1400 .0620 .3240 .3000 150 15/64 

1/8 0.4050 27 3/16 .1400 .0620 .3240 .3000 250 21/64 

1/4 0.5400 18 1/4 .2180 .0730 .4570 .4170 600 27/64 

3/8 0.6750 18 5/16 .2500 .0840 .5200 .4800 1200 9/16 

1/2 0.8400 14 3/8 .3120 .0950 .5820 .5420 1800 11/16 

3/4 1.0500 14 9/16 .3120 .1250 .6450 .6050 3000 57/64 

1 1.3150 11-1/2 5/8 .3750 .1250 .7700 .7300 4200 1-1/8 

1-1/4 1.6600 11-1/2 3/4 .4370 .1560 .8320 .7920 5400 37.5MM 

1-1/2 1.9000 11-1/2 1 .4370 .1560 .8430 .7800 6900 43.5MM 

2 2.3750 11-1/2 1 .4370 .1560 .9060 .8440 8500 2-3/16 

*Taper reaming after drilling is recommended for tapping ease and to give fully formed, uniform threads. 

Description 

A dry seal plug is one having a tapered (0.750" diametral per 12") thread extending its entire length and designed to have its threads 

mesh tightly with those of a taper-threaded hole. Both ends of the plug shall be flat and chamfered approximately 45°. The chamfer 

shall extend slightly below the root of the thread, and the edge between flat and chamfer shall be slightly rounded. 

Applications/ 

Advantages 

Material 


The thread trunction is closely controlled at root and crest to assure metal to metal contact, preventing spiral leakage and forming a 

positive seal without the use of sealing compounds. Dry seal plugs can be used in American Standard Taper Dryseal Pipe Thread (NPT) 

tapped holes, but for fullest protection against leakage, should be used in dryseal tapped holes which are taper reamed before tapping. 

High grade alloy steel 

Pipe plugs shall be heat-treated by quenching in oil from above the hardening temperature and tempered to achieve the hardness 

requirement listed below. 


Finish 

Plugs are supplied with a standard black finish.

Retaining Rings 

E Rings 

Carbon Spring Steel 

& Stainless Steel 

T 

F 

W 

H 

G 

TYPE E RETAINING RINGS 



Part Number 

Carbon Spring Steel Stainless Steel H G W F T 

Waldes Part 

Number 


Part Number 

Waldes Part 

Number 

Shaft 

Groove 

Diameter 

Groove 

Width 

Free 

Diameter 

Thickness 

E-6STPA 5133-6STPP E-6SS 5133-6H 0.062 0.052 0.012 0.051 0.010 



SE-14STPA X5133-14STPP SE-14SS X5133-14H 0.140 0.102 0.020 0.100 0.015 















Description 

Applications/ 

Advantages 

A semi-circular stamping with two ends which are set further apart than both internal and external rings. The two ends have flared 

"prongs" which are substantially wider than the other parts of the ring. A center prong extends from the inside perimeter of the 

ring, halfway between the two ends. The three prongs, when radially installed, make contact with the bottom of the groove. 

Designed for radial (vertical) installation into machined grooves on shafts of varying diameter. E-rings require a deeper groove, but 

provide exceptional thrust loadings when compared to fasteners of the same size and weight. Steel rings can be safely used within a 

temperature range of -100°F to 500°F. Stainless steel rings are corrosion resistant & can be used in higher heat applications from 

-100°F to 900°F. 

Material Steel: Carbon spring steel SAE 1060 - 1090 

Stainless: Precipitation Hardened Alloy 15% Chromium, 

7% Nickel, 2% Molybdenum 


Retaining rings are heat treated using the austempering method. Rings are uniformly heated to temperatures over 1500° F. They 

are then isothermally quenched in a molten salt bath at 600° F for 35 minutes. This results in parts with a bainite structure 

characterized by good mechanical properties. 

Hardness 

Steel 

Size 6: Rockwell 15N 84.5 - 87 (Hardness cannot be checked 

with any degree of accuracy on this size) 

Sizes 9 - S14: Rockwell 15N 84.5 - 87 


Sizes 37 & over: Rockwell C 47 - 52 

Stainless 

Size 6: Rockwell 15N 82.5 - 86 (Hardness cannot be checked 

with any degree of accuracy on this size) 


Sizes 14 - S31: Rockwell 30N 63 - 69.5 


Tensile Strength - Stainless: 225,000 psi. minimum 

Finish 

See Appendix-A for information on the coating of retaining rings.


Internal Type HO 



T 

W 

G 

H 

F 

INTERNAL TYPE RETAINING RINGS 



Part Number 

Carbon Steel Stainless Steel H G W F T 

Waldes Part 

Number 


Part Number 

Waldes Part 

Number 

Housing 

Diameter 

Groove 

Diameter 

Groove 

Width 

Free 

Diameter 

Thickness 

HO-25STPA N5000-25STPP HO-25SS N5000-25H 0.250 0.268 0.020 0.280 0.015 




























HO-200STPA N5000-200STPP HO-200SS N5000-200H 2.000 2.122 0.068 2.210 0.062



Internal Type HO 


INTERNAL TYPE RETAINING RINGS (CONTINUED) 



Rotor Clip ® Part 

Part Number 

Waldes Part 

Number 

Rotor Clip ® 

Part Number 

Waldes Part 

Number 

Housing 

Diameter 

Groove 

Diameter 

Groove 

Width 

Free 

Diameter 

Thickness 
















Description 

Applications/ 

Advantages 

A ring-shaped stamping with one opening on the circumference. The two ends at the opening are called lugs and flare slightly into 

the groove. When the lugs are released, contact is made with the grooved housing. 

Tapered section design assures constant moment and, therefore, uniform circular deformation; allows for complete contact and 

tightness in groove. The internal design is for axial installation into machined grooves in housings and bores. Steel rings can be 

safely used within a temperature range of -100°F to 500°F. Stainless steel rings are corrosion resistant & can be used in higher 

heat applications from -100°F to 900°F. 








Hardness 

Steel 

Sizes 25 & 31: Rockwell 15N 86 - 88 

Sizes 37 - 51: Rockwell 30N 69.5 - 73 

Sizes 56 - 77: Rockwell 30N 67.5 - 72 

Sizes 81 - 102: Rockwell 30N 66 - 71 

Sizes 106 - 347: Rockwell C 47 - 52 

Stainless 

Sizes 25 & 31: Rockwell 15N 82.5 - 86 

Sizes 37 - 102: Rockwell 30N 63 - 69.5 



Finish 

See Appendix-A for information on the coating of retaining rings.


External Type SH 



F 

T 

W 

H 

G 

EXTERNAL TYPE RETAINING RINGS 




Part Number 

Waldes Part 

Number 


Part Number 

Waldes Part 

Number 

Shaft 

Groove 

Diameter 

Groove 

Width 

Free 

Diameter 

Thickness 

SH-25STPA 5100-25STPP SH-25SS 5100-25H 0.250 0.230 0.029 0.225 0.025 














SH-87STPA 5100-87STPP SH-87S 5100-87H 0.875 0.821 0.046 0.810 0.042 














SH-175STPA 5100-175STPP SH-175SS 5100-175H 1.750 1.650 0.068 1.618 0.062



External Type SH 


EXTERNAL TYPE RETAINING RINGS (CONTINUED) 




Number 

Waldes Part 

Number 


Part Number 

Waldes Part 

Number 

Shaft 

Groove 

Diameter 

Groove 

Width 

Free 

Diameter 

Thickness 
















Description 

Applications/ 

Advantages 

A ring-shaped stamping with one opening on the circumference. The two ends at the opening are called lugs and flare out slightly 

allowing for easier installation onto shafts. 

Tapered section design assures constant moment and, therefore, uniform circular deformation; allows for complete contact and 

tightness in groove. The external design is for axial assembly into machined grooves on shafts. Steel rings can be safely used 

within a temperature range of -100°F to 500°F. Stainless steel rings are corrosion resistant & can be used in higher heat 

applications from -100°F to 900°F. 








Hardness 

Steel 

Sizes 25 & 46: Rockwell 30N 69.5 - 73 

Sizes 50 - 81: Rockwell 30N 66 - 71 

Sizes 87 - 102 Rockwell C 47 - 53 

Sizes 106 - 343: Rockwell C 47 - 52 

Stainless 

Sizes 25 - 31: Rockwell 30N 63 - 69.5 



Finish 

See Appendix-A for information about the coating of retaining rings.

Blind Rivets 

Aluminum—Steel—Stainless—Nickel—Copper 

Open End - Wide rivet range. Providing strong, low cost 

fastenings, open-end rivets are ideal for a wide variety of 

applications. 

Closed End - Where fastenings have to be water or pressure 

tight, and 100% mandrel head retention is required. 

Soft Set - Soft-Set POP Rivets incorporate a body and 

mandrel of special aluminum alloys. 

Multi-Grip - Wide grip range, ideal for use in inconsistent 

holes, reduced rivet inventory. 

Ultra-Grip - Provide superior holding power over other 

high strength rivets. 

BLIND RIVETS 

Tee-Rivet - Designed for structural and similar high 

strength applications. 

Load Spreading Rivets - Rivet Designed especially for 

plastics and other brittle or soft materials 

Easy Entry - Easy Entry Rivets line up odd shaped or 

misaligned holes in multiple sheets of material to make 

production easier and faster. 

Grooved Rivet - Designed to set within a hole in fibrous 

materials such as wood. When the rivet sets, the body 

shortens and the fibers of the material are grasped between 

the closed grooves. 

Peel Type Rivets - suitable for joining plastics, rubber, 

wood, GRP and laminates.

Peel Type Rivets has a unique setting action, suitable for joining plastics, 

rubber, wood, GRP and laminates. On setting, the body splits into four petals, withstanding 

high pull-out loads. Rivets are made of aluminum 3.5% magnesium alloy 

with carbon steel mandrels. 

General Features 

· Clamping loads spread over wide area, avoiding damage to vulnerable materials 

· Tolerance of over-sized holes 

· Sets with standard ‘POP' hand or power riveting tools 

· Can draw together and clamp components even when poorly aligned 

Application 

Widely used in the assembly of caravans, trailers. furniture, plastic-framed windows 

- any products involving joining of soft or friable materials. 

Phone (314) 567-8585 Fax (314) 567-7334 

Multi-Grip Rivets will serve in applications where different material thicknesses 

normally require several rivet sizes. This wide grip range capability permits 

design flexibility and reduced rivet inventory, which can result in substantial cost 

savings. 

General Features 

• Wide grip range 

• Tolerance of over-sized holes 

• Corrosion-resistant body of 2.5% magnesium aluminum alloy 

• Short range which covers 3 diameters 

• Sets with standard hand or power tools 

• Resistance to vibration 

Multi-Grip rivets are valuable where components are supplied to the user with 

holes already punched or drilled or where the sheets to be joined are folded or 

curved, making it difficult to match up two holes of the correct size.

HOW BLIND RIVETS WORK 

The standard blind break-mandrel rivet is comprised of two components, a rivet body and 

mandrel. The rivet is first placed into an installation tool, and is then inserted into the application. 

Activating the tool pulls the rivet’s mandrel drawing the mandrel head into the blind-end of the 

rivet body. This action forms an upset head on the rivet body and securely clamps the application 

materials together. Finally the mandrel reaches its predetermined break-load, with the spent 

portion of the mandrel breaking away and being removed from the set rivet. Fast, easy-to-use 

blind rivets offer speed of assembly, consistent mechanical performance and excellent installed 

appearance, making blind riveting a reliable and economical assembly method. 

The graph 

illustrates 

the 

mechanical 

function of 

a blind 

breakmandrel 

rivet during 

installation.

HEAD STYLES 

Dome Head 

The Dome Head Blind Rivet is 

the most widely available and 

commonly used head style. 

The dome head flange offers 

good bearing surface and is 

suitable for many applications. 

Dome Head rivets are 

available in 3/32", 1/8", 5/32", 

3/16" and 1/4" ø in all 

materials. 

Large Flange 

The Large Flange Blind Rivet 

offers a larger bearing surface 

than the Dome Head and is 

suited for joining compressible 

or brittle materials to structural 

members, i.e. wood/steel, 

plastic/steel. Large Flange 

rivets are available in 1/8", 

5/32", and 3/16" ø. 

Countersunk Head - 

120° 

The Countersunk Head Blind 

Rivet is used in applications 

requiring a flush surface. 

Countersunk rivets are 

available in 1/8", 5/32", and 

3/16" ø.

Application 

Data 

Part Number Key 

Rivets 

* 

ADS64L 

Rivet Material: A = Aluminum; S = Steel; SS = Stainless; K = Copper 

Mandrel Material: A = Aluminum; S = Steel; SS = Stainless 

Grip Range: In 16ths of an inch (4/16 = 1/4) 

L - This "L" indicates that the dome head is the Large Flange style. 

Rivet Diameter: In 32nd's of an inch (6/32 = 3/16) 

Head Style: D = Dome 

*Purchase Partners Part Number 

Notes on Rivet Selection 

Strength- The tensile and shear strengths required for an application must be determined and a rivet selected that 

meets those requirements. 

Materials- Choose a rivet that is made of a metal with similar mechanical and physical properties as the materials 

being joined. This is especially critical in assemblies where higher temperatures and/or corrosive elements are present. 

Metal compatability helps reduce the risks of galvanic corrosion and material fatigue. 

Grip Range- Measure the total thickness of the materials being fastened. This is known as the “rivet grip”. The grip 

ranges of the most commonly available rivets are listed in the table below. Sufficient rivet length is necessary for 

proper formation of the secondary head on the blind side of the assembly. Multi-grip rivets have wider grip ranges 

than standard blind rivets which are listed on pages 144-154. 

APPLICATION DATA FOR STANDARD BREAK-STEM BLIND RIVETS SAE J-1200 

Recommended 

Recommended 

Rivet 

Barrel 

Grip Range 

Hole Size 

Rivet 

Barrel 

Drill Size 

Grip Range 

Hole Size 

Number 

Length 

Number 

Length 

Max Min Max Min 

Drill Size 

31 .020-.062 .187 

516 .876-1.000 1.175 0.164 0.160 #20 

32 .020-.125 .250 62 .020-.125 .325 

0.100 0.097 #41 

33 .087-.187 .312 64 .188-.250 .450 

34 .126-.250 .375 66 .251-.375 .575 

41 .020-.062 .212 

68 .376-.500 .700 

42 .063-.125 .275 610 .510-.625 .825 

43 .126-.187 .337 612 .626-.750 .950 0.196 0.192 #11 

44 .188-.250 .400 0.133 0.129 #30 

614 .751-.875 1.075 

45 .251-.312 .462 616 .876-1.000 1.200 

46 .313-.375 .525 618 1.001-1.125 1.325 

48 .376-.500 .650 620 1.126-1.250 1.450 

52 .020-.125 .300 

622 1.251-1.375 1.575 

53 .125-.187 .362 84 .126-.250 .500 

54 .188-.250 .425 86 .251-.375 .625 

56 .251-.375 .550 0.164 0.160 #20 

88 .376-.500 .750 

58 .376-.500 .675 810 .501-.625 .875 

0.261 0.257 F 

510 .501-.625 .800 812 .626-.750 .990 

512 .626-.750 .925 816 .751-1.000 1.240

Rivets 

Purchase Partners Aluminum Rivet/ 

Aluminum Mandrel 

Dome Head 

Blind Rivet 

P 

E 

F 

‡ 

L 

W 

H 

D 

ALUMINUM BODY/ALUMINUM MANDREL DOME HEAD BREAK-STEM BLIND RIVETS SAE J-1200 

Nominal 

Rivet 

Diameter 

D H E W P F Ultimate 

Shear 

Load 

Rivet Shank 

Diameter 

Head Diameter 

Head 

Height 

Mandrel 

Diameter 

Mandrel 

Protrusion 

Blind Side 

Protrusion 

Ultimate 

Tensile 

Load 

Mandrel Break 

Load 

Max Min Max Min Max Nom Min Max Min, lb. Min, lb. Max Min 

1/8 0.128 0.122 0.262 0.238 0.040 0.076 1.00 L + 0.120 120 150 400 250 

5/32 0.159 0.153 0.328 0.296 0.050 0.095 1.06 L + 0.140 190 230 600 425 

3/16 0.191 0.183 0.394 0.356 0.060 0.114 1.06 L + 0.160 260 320 825 625 

1/4 0.255 0.246 0.525 0.475 0.080 0.151 1.25 L + 0.180 460 560 1400 1100 


Description 

Applications/ 

Advantages 

Material 

Shear Strength 


Mandrel Break 

Load 

An aluminum blind fastener which has a self-contained mechanical feature (a mandrel) which permits the formation of an upset on 

the blind end of the rivet and expansion of the rivet shank during rivet setting to join the component parts of an assembly. The 

aluminum mandrel is pulled into or against the rivet body, breaking at or near the junction of the mandrel shank and its upset end. 

The dome head is slightly rounded and twice as wide as the body diameter. 

Dome head is the most commonly specified head style because of its low profile and neat, finished appearance. 

Aluminum/aluminum rivets have the lowest tensile and shear values of all break mandrel rivets. They should be used when 

fastening materials with similar mechanical and physical properties. 

Rivet: Aluminum Alloy 5050 or 5052 or equivalent alloy. Rivets have no additional finish except for sizes #42 & 44 which are also 

available painted white. 

Mandrel: Aluminum Alloy 7178, 7075, 5056 or 2024 or equivalent alloy. 

Rivets shall have ultimate shear loads not less than the minimum ultimate shear loads specified for the applicable size given in the 

above table. 

Rivets shall have ultimate tensile loads not less than the minimum ultimate tensile loads specified for the applicable size given in 

the above table. 

While the rivet is being set, the axially applied load necessary to break the mandrel shall be within the limits specified for the 

applicable rivet size given in the above table. 

144

Dome Head 

Blind Rivet 

Aluminum Rivet/ 

Aluminum Mandrel 

Rivets 

PART NUMBER COMPARISON -DOME HEAD ALUMINUM RIVET/ALUMINUM MANDREL 

Purchase Partners Huck Pop ® Marson Star Celus ® Cherry G-Rivet 

ADA41 ABA41 AD41ABS AB4-1A 4-1AAD A/A 41D AAP-41 GAMD41A 








ADA53 ABA53 AD53ABS AB5-3A 5-3AAD A/A 53D - GAMD53A 




ADA510 ABA510 - - - A/A510D AAP-510 - 

ADA512 - - - - - - - 





ADA610 ABA610 AD610ABS AB6-10A 6-10AAD A/A610D AAP-610 GAMD610A 

ADA612 ABA612 AD612ABS AB6-12A 6-12AAD A/A612D AAP-612 GAMD612A 

ADA614 ABA614 - - - A/A614D AAP-614 GAMD614A 

ADA616 ABA616 AD616ABS AB6-16A - A/A616D AAP-616 GAMD616A 

ADA618 ABA618 - - - - - -

Rivets 

Purchase Partners Aluminum Rivet/ 

Steel Mandrel 

Dome Head 

Blind Rivet 

P 

E 

F 

‡ 

L 

W 

H 

D 

ALUMINUM BODY/STEEL MANDREL DOME HEAD BREAK-STEM BLIND RIVETS SAE J-1200 

Nominal 

Rivet 

Diameter 

D H E W P F 

Rivet Shank 

Diameter 

Head Diameter 

Head 

Height 

Mandrel 

Diameter 

Mandrel 

Protrusion 

Blind Side 

Protrusion 

Ultimate 

Shear 

Load 

Ultimate 

Tensile 

Load 

Mandrel Break 

Load 


3/32 0.096 0.090 0.198 0.178 0.032 0.057 1.00 L + 0.100 90 120 275 175 

1/8 0.128 0.122 0.262 0.238 0.040 0.076 1.00 L + 0.120 170 220 600 400 

5/32 0.159 0.153 0.328 0.296 0.050 0.095 1.06 L + 0.140 260 350 850 600 

3/16 0.191 0.183 0.394 0.356 0.060 0.114 1.06 L + 0.160 380 500 1050 750 

1/4 0.255 0.246 0.525 0.475 0.080 0.151 1.25 L + 0.180 700 920 1850 1450 


Description 

Applications/ 

Advantages 

Material 



Mandrel Break 

Load 

An aluminum blind fastener which has a self-contained steel mandrel which permits the formation of an upset on the blind end of 

the rivet and expansion of the rivet shank during rivet setting to join the component parts of an assembly. The steel mandrel is 

pulled into or against the rivet body, breaking at or near the junction of the mandrel shank and its upset end. The head of the body 

is slightly rounded and twice as wide as the body diameter. 

Dome head is the most commonly specified head style because of its low profile and neat, finished appearance. The steel mandrel 

gives this style rivet greater tensile and shear values than aluminum rivets with aluminum mandrels. They should be used when 

fastening materials with similar mechanical and physical properties. 

Rivet: Aluminum Alloy 5056 or 5154 or equivalent alloy. Rivets have no additional finish except for sizes #42 & 44 which are also 

available painted white. Note: Some manufacturers use aluminum alloy 5052 which is acceptable but will lower the shear, tensile 

and mandrel break load standards to those of aluminum rivets with aluminum mandrels (see page 144). 

Mandrel: Carbon steel 1006 or equivalent. May be furnished plain or with a protective coating, at the option of the manufacturer. 


above table. 




applicable rivet size given in the above table.

Dome Head 

Blind Rivet 

Aluminum Rivet/ 

Steel Mandrel 

Rivets 

PART NUMBER COMPARISON -ALUMINUM RIVET/STEEL MANDREL 


ADS31 - - - - - - - 

ADS32 ABS32 AD32BS AB3-2 - A/S 32D BSP-32 GSMD32A 


ADS41 ABS41 AD41BS AB4-1 4-1ASD A/S 41D BSP-41 GSMD41A 








ADS53 ABS53 AD53BS AB5-3 5-3ASD A/S 53D - GSMD53A 




ADS510 ABS510 - - - A/S510D BSP-510 - 

ADS512 - - - - - - - 

ADS516 - - - - - - - 





ADS610 ABS610 AD610BS AB6-10 6-10ASD A/S610D BSP-610 GSMD610A 

ADS612 ABS612 AD612BS AB6-12 6-12ASD A/S612D BSP-612 GSMD612A 

ADS614 ABS614 AD614BS - - A/S614D BSP-614 GSMD614A 

ADS616 ABS616 AD616BS AB6-16 - A/S616D BSP-616 GSMD616A 

ADS618 ABS618 - - - - - - 

ADS620 - - - - - - - 

ADS622 - - - - - - - 




ADS810 ABS810 AD810BS - - A/S810D BSP-810 GSMD810A

Rivets 

Purchase Partners Steel Rivet/ 

Steel Mandrel 

Dome Head 

Blind Rivet 

P 

E 

F 

‡ 

L 

W 

H 

D 

STEEL BODY/STEEL MANDREL DOME HEAD BREAK-STEM BLIND RIVETS SAE J-1200 

Nominal 

Rivet 

Diameter 


Shear 

Load 

Rivet Shank 

Diameter 

Head Diameter 

Head 

Height 

Mandrel 

Diameter 

Mandrel 

Protrusion 

Blind Side 

Protrusion 

Ultimate 

Tensile 

Load 

Mandrel Break 

Load 


1/8 0.128 0.122 0.262 0.238 0.040 0.076 1.00 L + 0.120 260 310 800 600 

5/32 0.159 0.153 0.328 0.296 0.050 0.095 1.06 L + 0.140 370 470 1000 750 

3/16 0.191 0.183 0.394 0.356 0.060 0.114 1.06 L + 0.160 540 680 1450 1150 

1/4 0.255 0.246 0.525 0.475 0.080 0.151 1.25 L + 0.180 1000 1240 2350 1950 


Description 

Applications/ 

Advantages 

Material 



Mandrel Break 

Load 

A carbon steel blind fastener which has a self-contained carbon steel mandrel which permits the formation of an upset on the blind 

end of the rivet and expansion of the rivet shank during rivet setting to join the component parts of an assembly. The steel mandrel 

is pulled into or against the rivet body, breaking at or near the junction of the mandrel shank and its upset end. The head of the 

body is slightly rounded and twice as wide as the body diameter. 

Dome head is the most commonly specified head style because of its low profile and neat, finished appearance. The all steel design 

gives this style rivet greater tensile and shear values than all varieties of aluminum rivets. They should be used when fastening 

materials similar to carbon steel. 

Rivet: Low carbon steel, plated zinc. 

Mandrel: Carbon steel 1006 or equivalent. May be furnished plain or with a protective coating, at the option of the manufacturer. 


above table. 




applicable rivet size given in the above table.

Dome Head 

Blind Rivet 

Steel Rivet/ 

Steel Mandrel 

Rivets 

PART NUMBER COMPARISON -DOME HEAD STEEL RIVET/STEEL MANDREL 

Purcahse Partners Huck Pop ® Marson Star Celus ® Cherry G-Rivet 

SDS41 SBS41 SD41BS SB4-1 4-1SSD S/S 41D SSP-41 GSMD41S 








SDS53 SBS53 SD53BS SB5-3 5-3SSD S/S 53D - GSMD53 

SDS54 SBS54 SD54BS SB5-4 5-4SSD S/S 54D SSP-54 GSMD54 


SDS58 SBS58 - SB5-8 5-8SSD S/S 58D SSP-58 GSMD58 





SDS610 SBS610 SD610BS SB6-10 6-10SSD S/S610D SSP-610 GSMD610 

SDS84 SBS84 SD84BS SB8-4 - S/S 84D SSP-84 GSMD84 



SDS810 SBS810 SD810BS - - S/S810D SSP-810 GSMD810 

SDS812 SBS812 SD812BS SB8-12 - S/S812D SSP-812 GSMD812 

SDS816 - SD816BS - - S/S816D SSP-816 GSMD816

Rivets 

Aluminum/Aluminum 

Aluminum/Steel 

Steel/Steel 

Large Flange 

Blind Rivet 

P F 

L ‡ 

E 

W 

H 

D 

LARGE FLANGE BREAK-STEM BLIND RIVETS SAE J-1200 

D H E W P F 

Nominal Rivet 

Diameter 

Rivet Shank Diameter Head Diameter Head Height 

Mandrel 

Diameter 

Mandrel 

Protrusion 

Blind Side 

Protrusion 

Max Min Max Min Max Nom Min Max 

1/8 0.128 0.122 .390 .360 .065 0.076 1.00 L + 0.120 

3/16 0.191 0.183 .650 .600 .092 0.114 1.06 L + 0.160 

Description 

Applications/ 

Advantages 

Material 


(Min) 


(Min) 

Mandrel Break 

Load 

A blind fastener which has a self-contained mandrel which permits the formation of an upset on the blind end of the rivet and expansion 

of the rivet shank during rivet setting to join the component parts of an assembly. The mandrel is pulled into or against the rivet body, 

breaking at or near the junction of the mandrel shank and its upset end. The large flange head has twice the under-head bearing 

surface of comparably sized dome head rivets. 

Large flange rivets are preferred where extra brittle or soft materials are being assembled to a rigid surface. 

Rivet: Aluminum-- Aluminum Alloy 5050, 5052, 5056 or 5154. Steel-- Low carbon steel, plated zinc. 

Mandrel: Aluminum-- Aluminum Alloy 7178, 5056 or 2024. Steel-- Carbon steel 1006 or equivalent. May be furnished plain or with a 

protective coating, at the option of the manufacturer. 

Aluminum Rivet/Aluminum Mandrel-- 1/8: 120 lbs.; 3/16: 260 lbs. 

Aluminum Rivet/Steel Mandrel-- 1/8: 170 lbs.; 3/16: 380 lbs. 

Steel Rivet/Steel Mandrel-- 3/16: 540 lbs. 

Aluminum Rivet/Aluminum Mandrel-- 1/8: 150 lbs.; 3/16: 320 lbs. 

Aluminum Rivet/Steel Mandrel-- 1/8: 220 lbs.; 3/16: 500 lbs. 

Steel Rivet/Steel Mandrel-- 3/16: 680 lbs. 

Aluminum Rivet/Aluminum Mandrel-- 1/8: 400 lbs. max, 250 lbs. min; 3/16: 825 lbs. max, 625 lbs. min. 

Aluminum Rivet/Steel Mandrel-- 1/8: 600 lbs. max, 400 lbs. min; 3/16: 1050 lbs. max, 750 lbs. min. 

Steel Rivet/Steel Mandrel-- 3/16: 1450 lbs. max, 1150 lbs. min.

Large Flange 

Blind Rivet 

Aluminum/Aluminum 

Aluminum/Steel 

Steel/Steel 

Rivets 

PART NUMBER COMPARISON -LARGE FLANGE ALUMINUM RIVET/ALUMINUM MANDREL 


ADA44L ABA44L AD44ABSLF ABL4-4A 4-4AALF A/A44LF AAL-44 GAML44A 

ADA64L ABA64L AD64ABSLF ABL6-4A - A/A64LF AAL-64 GAML64A 




PART NUMBER COMPARISON -LARGE FLANGE ALUMINUM/STEEL MANDREL 

Purcahse Partners Huck Pop ® Marson Star Celus ® Cherry G-Rivet 

ADS46L - - - - A/S 46LF BSL-46 GSML46A 

ADS48L - - - - - BSL-48 - 

ADS64L ABS64L AD64BSLF ABL6-4 - A/S 64LF BSL-64 GSML64A 

ADS66L ABS66L AD66BSLF ABL6-6 6-6ASLF A/S 66LF BSL-66 GSML66A 

ADS68L ABS68L AD68BSLF ABL6-8 6-8ASLF A/S 68LF BSL-68 GSML68A 

ADS610L ABS610L AD610BSLF ABL6-10 6-10ASLF A/S610LF BSL-610 GSML610A 

PART NUMBER COMPARISON -LARGE FLANGE STEEL RIVET/STEEL MANDREL 


SDS64L SBS64L SD64BSLF SBL6-4 - S/S 64LF SSL-64 GSML64S 

SDS66L SBS66L SD66BSLF SBL6-6 6-6SSLF S/S 66LF SSL-66 GSML66S 

SDS68L SBS68L SD68BSLF SBL6-8 6-8SSLF S/S 68LF SSL-68 GSML68S 

SDS610L SBS610L SD610BSLF SBL6-10 6-10SSLF S/S610LF SSL-610 GSML610S

Rivets 

Stainless Steel Rivet/ 

Stainless Steel Mandrel 

P 

F 

‡ 

E L 

Dome Head 

Blind Rivet 

W 

H 

D 

STAINLESS STEEL BODY/STAINLESS STEEL MANDREL DOME HEAD BREAK-STEM BLIND RIVETS SAE J-1200 

Nominal 

Rivet 

Diameter 


Shear 

Head Diameter 

Load 

Rivet Shank 

Diameter 

Head 

Height 

Mandrel 

Diameter 

Mandrel 

Protrusion 

Blind Side 

Protrusion 

Ultimate 

Tensile 

Load 

Mandrel Break 

Load, lb. 


1/8 0.128 0.122 0.262 0.238 0.040 0.076 1.00 L + 0.120 420 530 950 650 

5/32 0.159 0.153 0.328 0.296 0.050 0.095 1.06 L + 0.140 650 820 1450 1150 

3/16 0.191 0.183 0.394 0.356 0.060 0.114 1.06 L + 0.160 950 1200 1900 1400 

Description 

Applications/ 

Advantages 

Material 



Mandrel Break 

Load 

A stainless steel blind fastener with a self-contained stainless steel mandrel which is otherwise designed identically to other dome 

head rivets. The head of the body is slightly rounded and twice as wide as the diameter of the body. 

Dome head is the only head style for stainless steel rivets. Stainless rivets have the strongest tensile strengths, shear strengths 

and mandrel break-load standards of all the break mandrel rivets discussed in this section. They resist tarnishing under most 

atmospheric conditions and offers high strength at moderately raised temperatures. They should be used when fastening materials 

with mechanical and physical properties similar to stainless steel. 

Rivet: 305 (or equivalent) Stainless Steel 

Mandrel: Stainless Steel (300 series) 


above table. 




applicable rivet size given in the above table. 

PART NUMBER COMPARISON -DOME HEAD ALL STAINLESS STEEL BLIND RIVETS 

Purchase Partners Huck Pop® Marson 

Star Celus® Cherry G-Rivet 

SSDSS42 FBF42 SSD42SSBS SSB4-2S 4-2STSTD SS/SS42D CCP-42 GSSMD42SS 

SSDSS43 FBF43 SSD43SSBS SSB4-3S - SS/SS43D CCP-43 GSSMD43SS 



SSDSS48 FBF48 SSD48SSBS SSB4-8S - SS/SS48D - GSSMD48SS 




SSDSS58 FBF58 - - - - - - 




SSDSS68 FBF68 SSD68SSBS SSB6-8S - SS/SS68D CCP-68 GSSMD68SS

Rivets 

Purchase Partners Multi-Grip Large Flange 

Aluminum Blind Rivet/ 

Steel Mandrel 

B 

E 

D 

A 

C 

LARGE FLANGE MULTI-GRIP ALUMINUM BODY/STEEL MANDREL BLIND RIVETS 

Avdel* 

Part 

Number 

A B C D E 

Rivet 

Diameter 

Recommended 

Hole Size 

Shear 

Strength 

Tensile 

Strength 

Length Head Diameter Head Height Grip 

Max Min Max Min Max Min Range 

Pounds Pounds 

X-0410 1/8 .410 .350 .337 .313 .045 .033 .031-.187 .136 165 230 

X-0414 1/8 .530 .480 .337 .313 .045 .033 .125-.312 .136 165 230 

X-0514 5/32 .540 .490 .387 .363 .058 .046 .125-.312 .166 255 375 

X-0516 5/32 .610 .550 .387 .363 .058 .046 .156-.375 .166 255 375 

X-0521 5/32 .760 .715 .387 .363 .058 .046 .250-.500 .166 235 375 

X-0613 3/16 .550 .470 .637 .613 .075 .063 .062-.250 .199 350 530 

X-0621 3/16 .780 .720 .637 .613 .075 .063 .250-.500 .199 350 530 

X-0631 3/16 1.09 1.03 .637 .613 .075 .063 .500-.781 .199 350 530 

Description 

Applications/ 

Advantages 

Material 



An aluminum blind fastener with a self-contained steel mandrel. The multi-grip rivet design differs from a standard blind rivet two 

ways: (1) a section of the body shank has a slightly reduced outside diameter, and (2) the stem of the mandrel is pinched at a point 

above the mandrel head. The head of the large flange rivet is approximately 50% wider than the dome head. 

Multi-grip rivets provide maximum clamping action over a full range of material thicknesses while using the same rivet length. This 

allows flexibility in design, cuts production costs and reduces inventories. The large flange style is preferred when the rivet is seated in 

soft material to prevent it from pulling through. They should be used when fastening materials with mechanical and physical properties 

similar to aluminum. 

Rivet: Aluminum Alloy 5251 or equivalent alloy. 

Mandrel: Low carbon steel with a choice of coating: black phosphate or zinc with yellow chromate. 


above table. 

Rivets shall have ultimate tensile loads not less than the minimum ultimate tensile loads specified for the applicable size given in the 

above table. 


Zinc yellow mandrel 

PART NUMBER COMPARISON -LARGE FLANGE MULTI-GRIP RIVETS 

Avdel Avex® - 

Zinc yellow mandrel 

*Avdel Cherry Textron is the original writer of the multi-grip dimensions. 


Black phos mandrel 

Avdel Avex® - 

Black phos mandrel 

Pop® - 

Plain steel mandrel 

X-0410Y 1692-0410 X-0410B 1641-0410 AD41-43BSLF 

X-0414Y 1692-0414 X-0414B 1641-0414 - 

X-0514Y 1692-0514 X-0514B 1641-0514 - 

- 1692-0516 X-0516B 1641-0516 - 

- 1692-0521 X-0521B 1641-0521 - 

X-0613Y 1692-0613 X-0613B 1641-0613 AD62-64BSLF 

X-0621Y 1692-0621 X-0621B 1641-0621 AD66-68BSLF 

X-0631Y 1692-0631 X-0631B 1641-0631 -

Rivets 

Solid Rivets 

Button 

Head 

L 

T 

D 

R 

P 

S 

H 

0 

40 Approx 

Purchase Partners SOLID BUTTON HEAD RIVETS 

Nominal Size or Basic 

Shank Diameter 

P D H R 

ANSI/ASME 

B18.1.1 

Shank Diameter Head Diameter Head Height Head Radius 

Max Min Max Min Max Min Approx 

1/16 0.062 0.064 0.059 0.122 0.102 0.052 0.042 0.055 

3/32 0.094 0.096 0.090 0.182 0.162 0.077 0.065 0.084 

1/8 0.125 0.127 0.121 0.235 0.215 0.100 0.088 0.111 

5/32 0.156 0.158 0.152 0.290 0.268 0.124 0.110 0.138 

3/16 0.188 0.191 0.182 0.348 0.322 0.147 0.133 0.166 

7/32 0.219 0.222 0.213 0.405 0.379 0.172 0.158 0.195 

1/4 0.250 0.253 0.244 0.460 0.430 0.196 0.180 0.221 

9/32 0.281 0.285 0.273 0.518 0.484 0.220 0.202 0.249 

5/16 0.312 0.316 0.304 0.572 0.538 0.243 0.225 0.276 

11/32 0.344 0.348 0.336 0.630 0.592 0.267 0.247 0.304 

3/8 0.375 0.380 0.365 0.684 0.646 0.291 0.271 0.332 

13/32 0.406 0.411 0.396 0.743 0.699 0.316 0.294 0.358 

7/16 0.438 0.443 0.428 0.798 0.754 0.339 0.317 0.387 


Plus 

Minus 

0.016 0.016 

STANDARD HEADER POINTS FOR SMALL SOLID RIVETS* 

ANSI/ASME B18.1.1 

S 

T 

Nominal Size or Basic Shank Diameter 

Point Diameter 

Point Length 

Nominal Shank Length 

Approx Approx Max 

3/32 0.094 0.077 0.023 3/4 

1/8 0.125 0.102 0.031 3/4 

5/32 0.156 0.127 0.039 1 

3/16 0.188 0.154 0.047 1 

7/32 0.219 0.179 0.055 1-3/8 

1/4 0.250 0.204 0.062 1-3/8 

9/32 0.281 0.230 0.070 1-1/2 

5/16 0.312 0.255 0.078 1-1/2 

11/32 0.344 0.281 0.086 1-5/8 

3/8 0.375 0.307 0.094 1-5/8 

7/16 0.438 0.358 0.110 3 

*Apply when pointed rivets are specified.

Rivets 

Solid Rivets 

Flat 

Head 

L 

D 

P 

H 


Nominal Size or Basic Shank 

Diameter 

SOLID RIVETS, FLAT HEAD 

P D H 

Shank Diameter Head Diameter Head Height 

ANSI/ASME 

B18.1.1 

Max Min Max Min Max Min 

1/16 0.062 0.064 0.059 0.140 0.120 0.027 0.017 

3/32 0.094 0.096 0.090 0.200 0.180 0.038 0.026 

1/8 0.125 0.127 0.121 0.260 0.240 0.048 0.036 

5/32 0.156 0.158 0.152 0.323 0.301 0.059 0.045 

3/16 0.188 0.191 0.182 0.387 0.361 0.069 0.055 

7/32 0.219 0.222 0.213 0.453 0.427 0.080 0.065 

1/4 0.250 0.253 0.244 0.515 0.485 0.091 0.075 

9/32 0.281 0.285 0.273 0.579 0.545 0.103 0.085 

5/16 0.312 0.316 0.304 0.641 0.607 0.113 0.095 

11/32 0.344 0.348 0.336 0.705 0.667 0.124 0.104 

3/8 0.375 0.380 0.365 0.769 0.731 0.135 0.115 

13/32 0.406 0.411 0.396 0.834 0.790 0.146 0.124 

7/16 0.438 0.443 0.428 0.896 0.852 0.157 0.135 


Plus 

Minus 

0.016 0.016 

Description 

Applications/ 

Advantages 

Material 

Hardness 


Yield Point 

Elongation in 8 in. 

A small, flat-head metal fastener having no internal cavity, made of a malleable material. 

Designed to permanently join two or more pieces of metal with pre-drilled holes. Flat head design is sometimes preferred over the pan 

head to improve the product's finished appearance. 

Grade 0 solid rivets shall be made from steel which conforms to the following chemical composition ladle analysis: 

Phosphorous: 0.040% maximum; Sulfur: 0.050% maximum 

Rockwell B 65 maximum 

40,000 - 55,000 psi. 

23,000 psi., minimum 

27%, minimum

Flat Countersunk 

Head 

Solid Rivets 

Rivets 

L 

D 

o o 

90 ± 2 

P 

H 

Purchase Partners SOLID RIVETS, FLAT COUNTERSUNK HEAD 

ANSI/ASME 

B18.1.1 

P D H 

Nominal Size or Basic Shank 

Diameter 

Shank Diameter Head Diameter Head Height 

Max Min Max Min Ref 

1/16 0.062 0.064 0.059 0.118 0.110 0.027 

3/32 0.094 0.096 0.090 0.176 0.163 0.040 

1/8 0.125 0.127 0.121 0.235 0.217 0.053 

5/32 0.156 0.158 0.152 0.293 0.272 0.066 

3/16 0.188 0.191 0.182 0.351 0.326 0.079 

7/32 0.219 0.222 0.213 0.413 0.384 0.094 

1/4 0.250 0.253 0.244 0.469 0.437 0.106 

9/32 0.281 0.285 0.273 0.528 0.491 0.119 

5/16 0.312 0.316 0.304 0.588 0.547 0.133 

11/32 0.344 0.348 0.336 0.646 0.602 0.146 

3/8 0.375 0.380 0.365 0.704 0.656 0.159 

13/32 0.406 0.411 0.396 0.763 0.710 0.172 

7/16 0.438 0.443 0.428 0.823 0.765 0.186 


Plus 

Minus 

0.016 0.016 

Description 

Applications/ 

Advantages 

Material 

Hardness 


Yield Point 

Elongation in 8 in. 

A small, countersunk, flat-head metal fastener having no internal cavity, made of a malleable material. 

Designed to permanently join two or more pieces of metal with pre-drilled holes. Countersunk head design is preferred when moving 

parts must pass over the fastened area. 

Grade 0 solid rivets shall be made from steel which conforms to the following chemical composition ladle analysis: 

Phosphorous: 0.040% maximum; Sulfur: 0.050% maximum 

Rockwell B 65 maximum 

40,000 - 55,000 psi. 

23,000 psi., minimum 

27%, minimum

Rivets Semi-tubular Rivets Oval Heads 

H 

L 

H 

L 

P 

T 

E 

D 

J 

B 

D 

K 

B 

Type S 

Type T 

SEMI-TUBULAR OVAL HEAD RIVETS ANSI/ASME B18.7 

B D H E K T J P Tolerance on Lengths 

Nominal 

Size 

Shank 

Diameter 

Head 

Diameter 

Head 

Thickness 

Type T Taper Hole Rivets 

Hole Dia. at 

End of Rivet 

Hole 

Dia. at 

Bottom 

of Hole 

Hole 

Depth 

to Start 

of 

Apex 

Type S 

Straight Hole Rivets 

Hole Dia. at 

End of Rivet 

Hole 

Depth 

to Start 

of 

Apex 

Max Min Max Min Max Min Max Min Min Min Max Min Nom 

Up to 

and 

including 

4 times 

shank 

dia. 

Over 4 times 

shank dia. 

and up to 

and 

including 8 

times shank 

dia. 

Over 8 

times 

shank 

dia. 

0.061 0.061 0.058 0.114 0.104 0.019 0.015 0.046 0.042 0.032 0.042 0.044 0.039 0.046 ±0.007 ±0.008 ±0.010 

0.089 0.089 0.085 0.152 0.142 0.026 0.020 0.068 0.064 0.050 0.057 0.068 0.062 0.064 ±0.007 ±0.008 ±0.010 

0.099 0.099 0.095 0.192 0.182 0.032 0.026 0.076 0.072 0.057 0.065 0.076 0.070 0.077 ±0.007 ±0.008 ±0.010 

0.123 0.123 0.118 0.223 0.213 0.038 0.030 0.095 0.091 0.079 0.082 0.090 0.084 0.094 ±0.007 ±0.010 ±0.015 

0.146 0.146 0.141 0.239 0.229 0.045 0.035 0.112 0.106 0.085 0.104 0.107 0.100 0.126 ±0.010 ±0.012 ±0.015 

0.188 0.188 0.182 0.318 0.306 0.065 0.055 0.145 0.139 0.110 0.135 0.141 0.134 0.155 ±0.010 ±0.012 ±0.015 

0.217 0.217 0.210 0.444 0.430 0.076 0.061 0.166 0.158 0.136 0.151 0.163 0.155 0.189 ±0.010 ±0.015 ±0.020 

0.252 0.252 0.244 0.507 0.493 0.085 0.071 0.191 0.181 0.150 0.183 0.184 0.176 0.219 ±0.010 ±0.015 ±0.020 

0.310 0.310 0.302 0.570 0.554 0.100 0.086 0.235 0.225 0.190 0.214 0.219 0.211 0.243 ±0.010 ±0.015 ±0.020 

Description 

A small, headed metal fastener having a coaxial cylindrical or tapered hole which does not exceed 112% of the mean shank diameter in 

the end opposite a slightly rounded head. The head is approximately 50% wider than the diameter of the rivet body. 

Applications/ 

Advantages 

Material 

Easier to clinch than solid rivets. The hole reduces riveting forces for riveting tooling while the remaining clinched solid shank can provide 

comparable shear strengths to other common riveting products. The oval head style is popular because of its low profile head and neat, 

finished appearance. The fastener is installed with a riveting hammer. 

Steel: Low carbon steel (containing 0.1% carbon or less) 

Aluminum: Grades 5056, 1100, 2017, 2117 or 6053

Rivets 

Semi-tubular Rivets 

120° Countersunk 

Flat Head 

H 

L 

P 

H 

L 

T 

E 

D 

o 

120 

o 

±1 

J 

B 

D 

o 

120 

o 

±1 

K 

B 

Type S 

Type T 

SEMI-TUBULAR RIVETS, 120° COUNTERSUNK HEAD ANSI/ASME B18.7 

B D H E K T J P Tolerance on Length 

Nominal 

Size 

Shank 

Diameter 

Head Diameter 

Max, 

Edge 

Sharp 

Min, 

Edge 

Rounded 

or 

Flat 

Head 

Thickness 


Hole Dia. at 

End of Rivet 

Hole 

Dia. at 

Bottom 

of Hole 

Hole 

Depth 

to Start 

of Apex 

Type S Straight Hole 

Rivets 

Hole Dia. at 

End of Rivet 

Hole 

Depth 

to Start 

of Apex 

Max Min Ref Max Min Min Min Max Min Nom 

Up to and 

including 

4 times 

shank 

dia. 

Over 4 times 

shank dia. 

and up to 

and including 

8 times 

shank dia. 

Over 8 

times 

shank 

dia. 

0.089 0.089 0.085 0.223 0.203 0.039 0.068 0.064 0.050 0.057 0.068 0.062 0.064 ±0.007 ±0.008 ±0.010 

0.123 0.123 0.118 0.271 0.245 0.043 0.095 0.091 0.079 0.082 0.090 0.084 0.094 ±0.007 ±0.010 ±0.015 

0.146 0.146 0.141 0.337 0.307 0.056 0.112 0.106 0.085 0.104 0.107 0.100 0.126 ±0.010 ±0.012 ±0.015 

0.188 0.188 0.182 0.404 0.369 0.063 0.145 0.139 0.110 0.135 0.141 0.134 0.155 ±0.010 ±0.012 ±0.015 

0.217 0.217 0.210 0.472 0.430 0.075 0.166 0.158 0.136 0.151 0.163 0.155 0.189 ±0.010 ±0.015 ±0.020 

0.252 0.252 0.244 0.540 0.493 0.084 0.191 0.181 0.150 0.183 0.184 0.176 0.219 ±0.010 ±0.015 ±0.020 

Description 


the end opposite the head. The rivet's head is countersunk at an angle of 120°. 

Applications/ 

Advantages 

Material 


comparable shear strengths to other common riveting products. The 120° countersunk head provides a smooth offside surface and 

sufficient clearance for moving parts which pass over the rivet head. The fastener is installed with a riveting hammer. 



150° Countersunk 

Flat Head 

Semi-tubular Rivets 


Rivets 

H 

L 

P 

D 

o 

150 

o 

±2 

J 

B 

o 

136 Approx. 

SEMI-TUBULAR RIVETS, 150° COUNTERSUNK HEAD ANSI/ASME B18.7 

B D H J P Tolerance on Length 

Nominal 

Size 

Shank 

Diameter 

Head Diameter 

Standard 

Head 

Large Head 

Head Thickness 

Standard 

Head 

Large Head 

Hole Dia. at 

End of Rivet 

Hole 

Depth 

to Start 

of Apex 

Max Min Max Min Max Min Max Min Max Min Max Min Ref 

Up to 

and 

including 

4 times 

shank 

dia. 

Over 4 times 

shank dia. 

and up to 

and 

including 8 

times shank 

dia. 

Over 8 

times 

shank 

dia. 

0.146 0.146 0.141 0.303 0.289 0.367 0.351 0.045 0.035 0.051 0.041 0.105 0.099 0.141 ±0.010 0.012 0.015 

0.188 0.188 0.182 0.367 0.351 0.478 0.458 0.051 0.041 0.067 0.053 0.139 0.133 0.188 ±0.010 ±0.012 ±0.015 

0.252 0.252 0.244 0.478 0.458 .... .... 0.067 0.053 .... .... 0.183 0.173 0.250 ±0.010 ±0.015 ±0.020 

Description 

Applications/ 

Advantages 

Material 


the end opposite the head. The rivet's head is countersunk at an angle of 150° and has a low-profile that protrudes slightly above the 

material to which the rivet is attached. 


comparable shear strengths to other common riveting products. The 150° countersunk head is often chosen for decorative purposes. 

The fastener is installed with a riveting hammer. 



Truss Head Semi-tubular Rivets Purchase Partners Rivets 

H 

L 

H 

L 

P 

T 

E 

D 

J 

B 

D 

K 

B 

Type S 

Type T 

TRUSS HEAD SEMI-TUBULAR RIVETS ANSI/ASME B18.7 

B D H E K T J P Tolerance on Length 

Nominal 

Size 

Shank 

Diameter 

Head 

Diameter 

Head 

Thickness 


Hole Dia. at 

End of Rivet 

Hole 

Dia. at 

Bottom 

of Hole 

Hole 

Depth 

to Start 

of Apex 

Type S 

Straight Hole Rivets 

Hole Dia. at 

End of Rivet 

Hole 

Depth 

to Start 

of 

Apex 

Max Min Max Min Max Min Max Min Min Min Max Min Nom 

Up to 

and 

including 

4 times 

shank 

dia. 

Over 4 times 

shank dia. 

and up to 

and 

including 8 

times shank 

dia. 

Over 8 

times 

shank 

dia. 

0.061 0.061 0.058 0.130 0.120 0.019 0.015 0.046 0.042 0.032 0.042 0.044 0.039 0.046 ±0.007 ±0.008 ±0.010 

0.089 0.089 0.085 0.192 0.182 0.026 0.020 0.068 0.064 0.050 0.057 0.068 0.062 0.064 ±0.007 ±0.008 ±0.010 

0.123 0.123 0.118 0.286 0.276 0.038 0.030 0.095 0.091 0.079 0.082 0.090 0.084 0.094 ±0.007 ±0.010 ±0.015 

0.146 0.146 0.141 0.318 0.306 0.045 0.035 0.112 0.106 0.085 0.104 0.107 0.100 0.126 ±0.010 ±0.012 ±0.015 

0.188 0.188 0.182 0.381 0.369 0.065 0.055 0.145 0.139 0.110 0.135 0.141 0.134 0.155 ±0.010 ±0.012 ±0.015 

Description 


the end opposite the head. The head is approximately twice the diameter of the rivet body. 

Applications/ 

Advantages 

Material 


comparable shear strengths to other common riveting products. The truss head style is chosen when the rivet is seated in soft material 

to prevent it from pulling through. The fastener is installed with a riveting hammer. 



Rivets Purchase Partners Full-tubular Rivets 

Oval, Truss & Flat 

Countersunk Heads 

H 

L 

H 

L 

H 

L 

D 

D 

D 

R 

Oval Head 

R 

Truss Head 

Flat Countersunk Head 

L 

P 

L 

Extruded or drilled 

to head 

J 

S 

J 

S 

FULL-TUBULAR RIVETS ANSI/ASME B18.7 

Head 

Style 

Nominal 

Size 

S D H J P R Tolerance on Length 

Shank 

Diameter 

Head 

Diameter 

Head 

Thickness 

Diameter of 

Hole 

Depth of Hole 

Fillet 

Radius 

Max Min Max Min Max Min Max Min Max Min Max 

Up to 

and 

including 

4 times 

shank 

dia. 

Over 4 times 

shank dia. 

and up to 

and including 

8 times 

shank dia. 

Over 8 

times 

shank 

dia. 

Oval 0.146 0.146 0.141 0.239 0.229 0.045 0.035 0.107 0.100 To Head 0.375 0.020 ±0.010 ±0.012 ±0.015 

Truss 

0.146 

0.188 

0.146 

0.188 

0.141 

0.182 

0.318 

0.381 

0.306 

0.369 

0.045 

0.065 

0.035 

0.055 

0.107 

0.141 

0.100 

0.134 

To Head 

To Head 

0.375 

0.375 

0.020 

0.025 

±0.010 

±0.010 

±0.012 

±0.012 

±0.015 

±0.015 

Flat 

Countersunk 

0.146 

0.188 

0.146 

0.188 

0.141 

0.182 

0.317 

0.364 

0.307 

0.352 

0.050 

0.060 

0.040 

0.048 

0.107 

0.141 

0.100 

0.134 

To Head 

To Head 

0.375 

0.375 

.... 

.... 

±0.010 

±0.010 

±0.012 

±0.012 

±0.015 

±0.015 

Description 

A small, headed metal fastener having a coaxial cylindrical hole in the end opposite the head which exceeds 112% of the mean shank 

diameter. 

Applications/ 

Advantages 

Can punch its own hole in some plastics, leather and fabrics and be clinched all in one step. The fastener is installed with a riveting 

hammer. 

Material 



Rivets Split Rivets Oval Head 

H 

L 

D 

E 

G 

R 

SPLIT RIVETS, OVAL HEAD 

ANSI/ASME 

B18.7 

Nominal 

Size 

E D H G R 

Shank Diameter Head Diameter Head Thickness 

Radius of 

Head 

Fillet 

Radius 

Max Min Max Min Max Min Approx Max 

Tolerance on 

Length 

0.092 0.092 0.085 0.152 0.142 0.026 0.020 0.22 0.012 ±0.010 

0.125 0.125 0.113 0.223 0.213 0.035 0.027 0.31 0.016 ±0.015 

0.152 0.152 0.144 0.318 0.306 0.045 0.035 0.27 0.020 ±0.015 

0.190 0.190 0.180 0.349 0.337 0.055 0.045 0.25 0.025 ±0.015 

Description 

A small, round headed metal fastener with a split end for clinching by spreading the ends. 

Applications/ 

Advantages 

Designed to permanently join soft materials such as rubber, leather, canvas, wood and soft plastics. It eliminates cost of pre-drilling 

holes while preserving the strength of the assembly by not having material removed from the objects being joined. The rivet is installed 

with anvils that spread the prongs against the material. 

Material 

Steel: Low carbon steel (containing 0.1% carbon or less)

Fastening joints using rivet nuts provides several 

advantages over other joint fastening methods: 

Rivet Nuts 

• BLIND INSTALLATION: can be installed “blind” meaning access from only one 

side is necessary to install a rivet nut. 

• NO WELDING: do not need to be welded into place. This allows the use of prepainted 

and pre-galvanized materials reducing the production cost of in house 

processes. Rivet nuts will not damage the finish of the parent material! 

• VERSATILITY: can be installed into materials as thin as .010 inches thick (grip 

range varies by rivet nut size and style). This allows engineers to design products using 

thinner materials and alternate materials such as plastic while maintaining a strong 

thread for fastening. Advantage: less materia l, lower production costs, greater savings. 

• MATING SCREW: can accept a mating screw to attach an additional component. 

Thread Size: 6-32 through 3/8-16 

Grip Range: .020/.080 through .150/.312 

• Offers a wide variety of rivet nut styles common in the American market. 

• Provides manufactured rivet nuts that meet the highest standards in the industry. 

• Special applications often require special designs to meet your specific needs. Our team will 

be happy to help you design a rivet nut tailored to the demands of your special application 

• Environmental friendliness has become very important in today’s manufacturing world. 

We help manufacturers integrate clean technology into their product designs . 

2369 Schuetz Road St. Louis, Missouri 63146 

314/567-8585 (Phone) 314/ 567-7334 (Fax)

RIVET NUTS 

Part Number 

CAL2-0632-080 

CAL2-0632-130 

CAL2-0832-080 

CAL2-0832-130 

CAL2-1024-130 

CAL2-1024-225 

CAL2-1032-130 

CAL2-1032-225 

CAL2-2520-165 

CAL2-2520-260 

CAL2-3118-150 

CAL2-3118-312 

CAL2-3716-150 

CAL2-3716-312 

CAK2-0632-080 

CAK2-0632-130 

CAK2-0832-080 

CAK2-0832-130 

CAK2-1024-130 

CAK2-1024-225 

CAK2-1032-130 

CAK2-1032-225 

CAK2-2520-165 

CAK2-2520-260 

CAK2-3118-150 

CAK2-3118-312 

CAK2-3716-150 

CAK2-3716-312 

CAH2-0632-080 

CAH2-0632-130 

CAH2-0832-080 

CAH2-0832-130 

CAH2-1024-130 

CAH2-1024-225 

CAH2-1032-130 

CAH2-1032-225 

Size 

6-32 .080 Grip Range 








1/4-20 .165 Grip Range 

1/4-20 .260 Grip Range 

5/16-18 .150 Grip Range 

5/16-18 .312 Grip Range 

3/8-16 .150 Grip Range 

3/8-16 .312 Grip Range 









1/4-20 .165 Grip Range 

1/4-20 .260 Grip Range 

5/16-18 .150 Grip Range 

5/16-18 .312 Grip Range 

3/8-16 .150 Grip Range 

3/8-16 .312 Grip Range 









Category 

RIVET NUT (Thin Wall) 




































Sub-Category 

Large Flange 

Large Flange 

Large Flange 

Large Flange 

Large Flange 

Large Flange 

Large Flange 

Large Flange 

Large Flange 

Large Flange 

Large Flange 

Large Flange 

Large Flange 

Large Flange 

Low Profile 

Low Profile 

Low Profile 

Low Profile 

Low Profile 

Low Profile 

Low Profile 

Low Profile 

Low Profile 

Low Profile 

Low Profile 

Low Profile 

Low Profile 

Low Profile 

Semi -Hex 

Semi -Hex 

Semi -Hex 

Semi -Hex 

Semi -Hex 

Semi -Hex 

Semi -Hex 

Semi -Hex 

Material 

(ST, ALU, SS) 

(ST, ALU, SS) 

(ST, ALU, SS) 

(ST, ALU, SS) 

(ST, ALU, SS) 

(ST, ALU, SS) 

(ST, ALU, SS) 

(ST, ALU, SS) 

(ST, ALU, SS) 

(ST, ALU, SS) 

(ST, ALU, SS) 

(ST, ALU, SS) 

(ST, ALU, SS) 

(ST, ALU, SS) 

(ST, ALU, SS) 

(ST, ALU, SS) 

(ST, ALU, SS) 

(ST, ALU, SS) 

(ST, ALU, SS) 

(ST, ALU, SS) 

(ST, ALU, SS) 

(ST, ALU, SS) 

(ST, ALU, SS) 

(ST, ALU, SS) 

(ST, ALU, SS) 

(ST, ALU, SS) 

(ST, ALU, SS) 

(ST, ALU, SS) 

Steel 

Steel 

Steel 

Steel 

Steel 

Steel 

Steel 

Steel 

Visit our website, 


for a complete listing of all the parts we carry!

Captive and 

Panel Fasteners 

Avoid the problems of lost, dropped or misplaced hardware. Parts are 

captive to the panel. Wide variety: standard thread, fast-lead thread, 

inserts, and plungers 

• Captive Screws • Quarter Turn Fasteners • Captive Nuts 

• Fast-Lead Thread Screws • Spring-Loaded Plungers 

Captive Screws 

Industry's widest variety of captive screw styles Metric and Imperial thread sizes 

Options in driver recesses, headstyles, thread sizes, installation methods, and finishes 

Full screw retraction styles available 

Quarter Turn Fasteners 

Quick access combined with captive fastening Designed for quick access 

Assembly remains captive to the panel; prevents lost hardware 

Wide variety of headstyles, receptacles, and retainers Assemble with 

or without spring-ejection 

Fast-Lead Thread Screws 

Fast-lead threads travel twice as fast as standard threads Resist crossthreading 

Quick access One screw assembly fastens a range of thicknesses 

Spring-Loaded Plungers 

Simplified positioning of sliding components Quick release hinge for removable 

door Quick installation and removal of components Designate touch 

points with color 

Call (314) 567-8585

Self-Clinch Studs 

A 

12-Rib Style 

B 

Flush 

Head 

STEEL SELF-CLINCHING STUDS - 12-RIB STYLE WITH ANNULAR GROOVE 

Crescent 

Manufacturing 

Thread 

Size 

A 

Head Diameter 

B 

Unthreaded 

Length 

Minimum 

Sheet 

Thickness 

Hole in Sheet 

(+.003, -.000) 

Distance to 

Center of 

Hole in 

Panel 

Max Min Max Min 

Push-Out 

(lbs.) 

Torque-Out 

(In.-lbs.) 

#4 thru #10 diam based 

on .060 steel plates. 

1/4 & 5/16 diam based 

on .088 steel plates. 

Estimate of 

Installation 

Force in Steel 

(lbs.) 

Tons Approx 

4-40 .204 .172 .085 .040 .111 .22 280 11 2 

6-32 .219 .187 .090 .040 .137 .25 350 30 2.5 

8-32 .250 .218 .090 .040 .163 .28 400 65 3 

10-24 .266 .234 .100 .040 .189 .28 500 100 3.25 

10-32 .266 .234 .100 .040 .189 .28 500 100 3.5 

1/4-20 .344 .312 .135 .062 .249 .31 700 120 4.75 

5/16-18 .391 .361 .160 .093 .311 .38 850 200 5 

Tolerance on Length ±.015 

Description 

Applications/ 

Advantages 

Material 


Case Hardness 

A fastener with unified thread pitch and a cylindrical, low profile head with small, rectangular ribs protruding from the underside 

of the head. The top of the head is flat and is flush with the mating surface when installation is complete. Below the ribs and 

above the first thread is an annular groove which helps to hold the fastener in position. 

Intended for metal panel-to-panel applications and well-suited for use in printed circuit boards. A hole is pierced into the circuit 

board and the unit it is attached to. The stud is inserted using a hand press or by hand, applying parallel squeezing forces. A 

hex nut is twisted onto the stud, securing it from the back. As the nut is tightened, the ribbed stud head grips the front panel to 

secure the application from the front as well, eliminating the need for welding. As the application force is applied, part of the 

sheet cold flows into an undercut under the head, making the fastener an integral part of the sheet. 

Low carbon steel 

Clinch studs shall be case hardened, oil quenched and tempered. 

Rockwell C 45 minimum 

Core Hardness Rockwell C 29 - 38 

Plating 

See Appendix-A for plating information.

Flush 

Head 

12-Rib Style 

Self- Clinch Studs 

B 45° 

T 

THIN SHEET ANVIL 

Intended for panels less than 0.060” in thickness, with #4 thru 

#10 thread sizes, inclusive. Also, for panels less than 0.093” 

in thickness with 1/4” thread size. 

T 

THICK SHEET ANVIL 

Intended for panels 0.060” and greater in thickness, with #4 

thru #10 thread sizes, inclusive. Also, for panels 0.093” and 

greater in thickness with 1/4” thread size. 

PRESS 

Thread Size 

4-40 

ANVIL DIMENSIONS 

Anvil 

B 

T 

0.136 0.113 

0.140 0.116 

STUD 

SHEET 

6-32 

8-32 

0.162 0.139 

0.166 0.142 

0.188 0.165 

0.192 0.168 

10-24 & 10-32 

0.216 0.191 

0.220 0.194 

1/4-20 

0.295 0.250 

0.300 0.253 

5/16-18 

–– 0.3125 

–– 0.3155 

ANVIL 

Notes on Installation: Apply only sufficient squeezing pressure 

to embed head of stud flush with panel. Do not use more 

pressure than necessary. Amount of pressure varies with panel 

material and size of stud. Studs install flush in sheets .040” or 

thicker but will project up to .020” in thinner sheets. 

FLUSH HEAD CLINCH STUD -PART NUMBER COMPARISON 

Size PEM® Part Number Size PEM® Part Number Size PEM® Part Number 

4-40 x 1/4 FH440-4 8-32 x 1/4 FH832-4 10-32 x 3/8 FH032-6 

4-40 x 5/16 FH440-5 8-32 x 5/16 FH832-5 10-32 x 1/2 FH032-8 

4-40 x 3/8 FH440-6 8-32 x 3/8 FH832-6 10-32 x 5/8 FH032-10 

4-40 x 1/2 FH440-8 8-32 x 1/2 FH832-8 10-32 x 3/4 FH032-12 

4-40 x 5/8 FH440-10 8-32 x 5/8 FH832-10 10-32 x 7/8 FH032-14 

4-40 x 3/4 FH440-12 8-32 x 3/4 FH832-12 10-32 x 1 FH032-16 

6-32 x 1/4 FH632-4 8-32 x 7/8 FH832-14 10-32 x 1 1/4 FH032-20 

6-32 x 5/16 FH632-5 8-32 x 1 FH832-16 10-32 x 1 1/2 FH032-24 

6-32 x 3/8 FH632-6 8-32 x 1 1/4 FH832-20 1/4-20 x 1/2 FH0420-8 

6-32 x 1/2 FH632-8 10-24 x 3/8 FH024-6 1/4-20 x 5/8 FH0420-10 

6-32 x 5/8 FH632-10 10-24 x 1/2 FH024-8 1/4-20 x 3/4 FH0420-12 

6-32 x 3/4 FH632-12 10-24 x 5/8 FH024-10 1/4-20 x 7/8 FH0420-14 

6-32 x 7/8 FH632-14 10-24 x 3/4 FH024-12 1/4-20 x 1 FH0420-16 

6-32 x 1 FH632-16 10-24 x 7/8 FH024-14 1/4-20 x 1 1/4 FH0420-20 

6-32 x 1 1/4 FH632-20 10-24 x 1 FH024-16 1/4-20 x 1 1/2 FH0420-24 

10-24 x 1 1/4 FH024-20 

10-24 x 1 1/2 FH024-24

SOCKET CAP SCREWS 

Alloy 

Stainless 

316 Stainless 

Alloy Nylon Patch 

Alloy Nylon Pellet 

Stainless Nylon Patch 

Silicon Bronze 

Ni-Cu 

Lo-Head Alloy 

1936 Alloy 

Metric Low-Head 

Metric Alloy 

Metric Stainless 

SOCKET SET SCREWS 

Alloy Cup Pt. 

Stainless Cup Pt. 

316 Stainless Cup Pt. 

Alloy Cup Pt. Nylon Patch 

Alloy Cup Pt. Nylon Pellet 

Stainless Cup Pt. Patch 

Brass Cup Pt. 

Ni-Cu Cup Pt. 

Alloy Knurled Pt. 

Alloy Cone Pt. 

Alloy Cone Pt. Nylon Patch 

Alloy Oval Pt. 

Alloy Oval Pt. Nylon Patch 

Alloy 1/2 Dog Pt. 

Alloy 1/2 Dog Pt. Patch 

Alloy Full Dog Pt. 

Alloy Flat Pt. 

Alloy Flat Pt. Nylon Patch 

Alloy Metric Cup Pt. 

Stainless Metric Cup Pt. 

Stainless Flat Pt. 

Stainless Cone Pt. 

Stainless Oval Pt. 

Stainless 1/2 Dog 

PIPE PLUGS 

Brass (3/4") NPTF 

Alloy Dry Seal (3/4") NPTF 

Stainless Dry Seal (3/4") NPTF 

Alloy Flush Seal (7/8") NPTF 

SOCKET PRODUCTS 

FLAT SOCKET CAP SCREWS 

Alloy 

Stainless 



Alloy Metric 

Stainless Metric 

SHOULDER BOLTS 

Alloy 



Alloy Metric 

Stainless 

BUTTON SOCKET 

Alloy 

Stainless 



Alloy Metric 

Stainless Metric 

SQUARE HEAD SET SCREWS 

Brass Cup Pt. 

Stainless Cup Pt. 

Steel Cup Pt. 

Steel Dog Pt. 

Fine Thread 

Steel Flat Pt. 

Steel Cone Pt. 

Steel Oval Pt. 

Alloy Steel - Cup Pt. 

HEX KEYS ALLOY 

Short Arm 

Tamper Resistant Key 

Long Arm 

Metric-Long Assortments 

Metric Assortments 

T-Handle Assortments 

Metric-Short

PT ® Thread Forming Screw 

THE FASTENER SOLUTION FOR THERMOPLASTICS 

Features 

• Narrow 30º thread profile 

• Recessed thread root 

• Optimum thread pitch 

• Round body Sizes from M1.5 to 

M10 

Benefits 

• Reduces radial stress 

• Allows thinner bosses to be used 

• Resists relaxation and vibration 

loosening 

• Provides increased pull-out values 

• Lowers installation torque 

30 Degree Thread Angle 

Reduces radial stresses 

Provides increased thread depth 

Lower installation torque 

Improves material flow due to high axial 

component 

Optimum Pitch 

• Resists vibration loosening 

• Provides optimum nonreversibility 

• Balances load ratio between 

fastener and plastic 

Profiled Thread Root 

• Maximum resistance to relaxation 

• Improved retention of clamp load 

• Prevents material jam

BOSS DESIGN RECOMMENDATIONS FOR 

PT SCREW 

Through a series of laboratory tests and 

field service feedback, some general 

recommendations can be made. For 

specific application concerns, contact 

Semblex Engineering 

The use of a counterbore, as 

shown is crucial to achieving 

a favorable distribution of 

stresses on the boss edges. 

Design 

Recommendation 

d = Nominal PT ® 

Diameter 

Material Hole Ø External Ø Min Insertion Length 

ABS 

(Acrylonitrile - 

Butadiene- 

Styrene) 

0.80 x d 2.00 x d 2.00 x d 

ABS / PC Blend 0.80 x d 2.00 x d 2.00 x d 

ASA (Acrylic- 

Styrene- 

Acrylonitrile) 

PA 4.6 (Nylon 

4/6) 

PA 4.6 - GF 30 

(Nylon 4/6 30% 

Glass Filled) 

0.78 x d 2.00 x d 2.00 x d 

0.73 x d 1.85 x d 1.80 x d 

0.78 x d 1.85 x d 1.80 x d 

PA 6 (Nylon 6) 0.75 x d 1.85 x d 1.70 x d 

PA 6 - GF 30 

(Nylon 6 30% 

Glass Filled) 

PA 6.6 (Nylon 

6/6) 

PA 6.6 - GF 30 

(Nylon 6/6 30% 

Glass FIlled) 

PBT 

(Polybutylene - 

Tere phthalate) 

PBT - GF 30 

(Polybutylene - 

Terephthalate 

30% Glass 

Filled) 

0.80 x d 2.00 x d 1.90 x d 

0.75 x d 1.85 x d 1.70 x d 

0.82 x d 2.00 x d 1.80 x d 

0.75 x d 1.85 x d 1.70 x d 

0.80 x d 1.80 x d 1.70 x d

PC* 

(Polycarbonate) 

PC - GF* 

(Polycarbonate 

30% Glass 

Filled) 

PE - LD 

(Polyethylene 

Low Density) 

PE - HD 

(Polyethylene 

High Density) 

PET 

(Polyethylene 

Terephthalate) 

PET - GF 30 

(Polyethylene 

Terephthalate 

30% Glass 

Filled) 

0.85 x d 2.50 x d 2.20 x d* 

0.85 x d 2.20 x d 2.00 x d* 

0.70x d 2.00 x d 2.00 x d 

0.75 x d 1.80 x d 1.80 x d 

0.75 x d 1.85 x d 1.70 x d 

0.80 x d 1.80 x d 1.70 x d 

POM 0.75 x d 1.95 x d 2.00 x d 

PP 

(Polypropylene) 

PP - GF 30 

(Polypropylene 

30% Glass 

Filled) 

PP - TF 20 

(Polypropylene 

20% Talc Filled) 

PPO* 

(Polypropylene- 

Oxide) 

0.70 x d 2.00 x d 2.00 x d 

0.72 x d 2.00 x d 2.00 x d 

0.72x d 2.00 x d 2.00 x d 

0.85 x d 2.50 x d 2.20 x d 

PS (Polystyrene) 0.80 x d 2.00 x d 2.00 x d 

PVC (hard) 

(Polyvinyl 

Chloride) 

0.80 x d 2.00 x d 2.00 x d 

PEEK 0.85 x d 2.00 x d 2.00 x d 

SAN (Styrene 

Acrylonitrile) 

0.77 x d 2.00 x d 1.90 x d 

PT ® , DeltaPT ® , Duro -PT ® and PT ® Type DG ® are registered trademarks of EJOT Verbindungstechnik GmbH & Co. 

KG.. MAThread ® and MATPoint ® are a registered trademark of MAThread Inc. Square Cone ® is a registered 

trademark of Shakeproof Division of ITW. 

Phone 314/ 567-8585 

Fax 314/567-7334 


STAINLESS STEEL & EXOTIC METALS 

Stainless steels achieve “stainless” characteristics by virtue of their ability to form a tight adherent film 

of iron-chromium oxide which strongly resists attack by the atmosphere and a wide variety of industrial 

gases and chemicals. This effect, plus the superior high temperature strength characteristics exhibited by 

many of these alloys, accounts for their wide use at ordinary and elevated temperatures with a wide 

choice of mechanical properties and several distinct levels of corrosion resistance. 

These materials are subdivided into the following groups: 

1. Martensitic stainless steels are iron-chromium alloys which are harden able by heat treatment. 

Representative of this group are Types 410, 420, 431 and 440C. 

2. Ferritic stainless steels are iron-chromium alloys which cannot be hardened significantly 

by heat treatment. Representative of this group are Types 405 and 430. 

3. Austenitic stainless steels are iron-chromium-nickel and iron-chromium-manganese-nickel 

alloys, which are harden able by cold working. Representative of this group are Types 201, 304, 

and 316. 

4. Precipitation hardening stainless steels are iron-chromium-nickel alloys with additional 

elements which are harden able by solution treating and aging. 

Martensitic and Ferritic steels are magnetic in all conditions; Austenitic steels are slightly magnetic 

in the cold worked condition, but non-magnetic in the annealed condition in which they 

are most often used. 

18-8 Stainless Steel This is the most popular type of stainless used in the production of fasteners. 

Its composition is approximately 18% Chromium and 8% Nickel, thus the name 18-8. 

Several grades of stainless are included in this classification including 302, 303, 304 and 305. 

These all have good strength and corrosion resistance. 

316 Stainless Steel This is more corrosion resistant than 18-8, but also more expensive. It is 

composed of approximately 18% Chromium and 12% Nickel with the addition of 2% to 4% 

Molybdenum. It also maintains its strength at higher temperatures than 18-8. 

410 Stainless Steel It has approximately 12% Chromium with no Nickel. It is not very corrosion 

resistant and is magnetic, but it can be heat treated to become harder. 

Alloy 20 This alloy has approximately 20% Chromium and 34% Nickel plus 3% to 4% Molybdenum. 

It is very corrosion resistant and is especially popular when in contact with sulfuric 

acid. 

Brass This metal is approximately 65% Copper and 35% Zinc. It offers a good combination of 

strength, corrosion resistance and workability. 

Nickel Copper 400 This alloy is approximately 70% Nickel and 30% Copper. It has excellent 

strength and corrosion resistance and is used in salt water marine and other chemical environments. 

Titanium This has a very high strength to weight ratio, as well as good corrosion resistance. 

Inconel Registered Trademark of Inco Ltd. Composed of approximately 77% Nickel and 15% 

Chromium. It offers superior strength and good corrosion at high temperatures. 

Silicon Bronze It is composed of approximately 96% Copper, 3% Silicon, and 1% Manganese. 

It is more corrosion resistant and tougher than brass. It is widely used in the electrical industry.

TAMPER PROOF AND 

RESISTANT FASTENERS 

Snake Eyes ® Spanner 

The original Snake Eyes ® Spanner requires matching driver bit reducing 

the chances of unauthorized removal. Available in 18-8 stainless 

steel. Some machine screws available in brass. Stainless steel set 

screws available as special order. Nuts are Zinc alloy. 

Phillips Pin-Head 

Traditional Phillips drive with tamper-resistant pin added for security. 

Easy to drive & remove with matching tool. (Cannot be removed with 

Phillips Screwdriver.) Available in machine & sheet metal screws 

with Flat or Pan-Head design. 

Socket Pin-Head 

Engineered for a high degree of tamper-resistance offering positive 

engaging, high torque transmission while resisting cam-out and tool 

wear. Available in Button & Flat-Head design or set screws (special 

order). Matching driver bit required for installation and removal. 

Torx ® Pin-Head 

Maximum torque transfer & positive tool engagement means easier 

drive installation with less pressure & slippage. Torx ® Pin-Head offers 

a high degree of security & requires matching driver bit. Available 

in Button & Flat-Head machine screws & Button, Flat & Pan- 

Head design sheet metal screws. 

One-Way Slotted 

Popular design installs with standard screwdriver. Reverse side 

cammed out to prevent unauthorized removal. Machine and sheet 

metal screws available in Round, Truss or Oval-Head designs. Sex- 

Bolts also available. 

Breakaway Nut/Non-Removable Security Nut Aluminum 

Hex nut breaks away when nut is tightened leaving only the tamperresistant 

conical portion. No special tool is required - uses standard 

wrench for installation.

Threaded Inserts 

B1U-256 

2-56 Standard Length- 0.157 

BRASS INSERT (Ultrasonic/Heat) 

Self-Aligning 

Brass 

B1U-440 



Self-Aligning 

Brass 

B1U-632 



Self-Aligning 

Brass 

B1U-832 



Self-Aligning 

Brass 

B1U-1024 



Self-Aligning 

Brass 

B1U-1032 



Self-Aligning 

Brass 

B1U-420 

1/4-20 Standard Length- 0.500 


Self-Aligning 

Brass 

B1U-428 


BRASS INSERT (Ultrasonic/ 

Heat) 

Self-Aligning 

Brass 

B1U-616 



Heat) 

Self-Aligning 

Brass 

B1U-624 



Heat) 

Self-Aligning 

Brass 

B1U-240 

M2x0.4 Standard Length- 4.00 


Heat) 

Self-Aligning 

Brass 

B1U-2545 

M2.5x0.45 Standard Length- 

5.74 


Heat) 

Self-Aligning 

Brass 

B1U-350 



Heat) 

Self-Aligning 

Brass 

B1U-3560 

M3.5x0.6 Standard Length- 7.14 


Heat) 

Self-Aligning 

Brass 

B1U-470 



Heat) 

Self-Aligning 

Brass 

B1U-580 



Heat) 

Self-Aligning 

Brass 

B1U-610 

M6x1 Standard Length- 12.70 


Heat) 

Self-Aligning 

Brass 

B1U-256S 

2-56 Short Length- 0.115 


Heat) 

Self-Aligning 

Brass 

B1U-440S 



Heat) 

Self-Aligning 

Brass 

B1U-632S 



Heat) 

Self-Aligning 

Brass 

Visit our website, 


for a complete listing of all the parts we carry!

B1U-832S 



Heat) 

Self-Aligning 

Brass 

B1U-1024S 



Heat) 

Self-Aligning 

Brass 

B1U-1032S 



Heat) 

Self-Aligning 

Brass 

B1U-420S 

1/4-20 Short Length- 0.300 


Heat) 

Self-Aligning 

Brass 

B1U-428S 



Heat) 

Self-Aligning 

Brass 

B1U-616S 



Heat) 

Self-Aligning 

Brass 

B1U-624S 



Heat) 

Self-Aligning 

Brass 

B1U-240S 

M2x0.4 Short Length- 2.90 


Heat) 

Self-Aligning 

Brass 

B1U-2545S 

M2.5x0.45 Short Length- 3.45 


Heat) 

Self-Aligning 

Brass 

B1U-350S 



Heat) 

Self-Aligning 

Brass 

B1U-3560S 

M3.5x0.6 Short Length- 3.80 


Heat) 

Self-Aligning 

Brass 

B1U-470S 



Heat) 

Self-Aligning 

Brass 

B1U-580S 



Heat) 

Self-Aligning 

Brass 

B1U-610S 

M6x1 Short Length- 7.60 


Heat) 

Self-Aligning 

Brass 

B2U-256 



Heat) 

Flange for Straight Holes 

Brass 

B2U-440 



Heat) 


Brass 

B2U-632 



Heat) 


Brass 

B2U-832 



Heat) 


Brass 

B2U-1024 



Heat) 


Brass 

B2U-1032 



Heat) 


Brass 

B2U-420 



Heat) 


Brass 

B2U-428 



Heat) 


Brass 

B2U-616 



Heat) 


Brass 

B2U-624 



Heat) 


Brass

THREADED ROD 

Finishes: Plain or Zinc 

Lengths 

Right Hand Threads: 2’, 3’, 6’, 10’, 12’ 

Left Hand Threads: 3’, 6’, 12’ 

CARBON STEEL THREADED ROD 

National Coarse (NC) 

Size Wt per 100' Pcs per Bundle 

1/4-20 11.9 50 

5/16-18 19.3 35 

3/8-16 28.4 25 

7/16-14 39.6 17 

1/2-13 51.2 12 

5/8-11 67 8 

3/4-10 83.1 5 

7/8-9 121.7 4 

1-8 167.5 2 

1 1/8-7 219 1 

1 1/8-8 280.5 1 

1 1/4-7 350 1 

1 3/8-6 417.2 1 

1 1/2-6 504.7 1 

2-4 1/2 1180 1 

STAINLESS STEEL THREADED ROD 

304 SS (A 193 B8) and 316 SS (A 193 B8M) 

Size Wt per 100' Pcs per Bundle 

1/4-20 12.3 50 

5/16-18 20.1 35 

3/8-16 29.6 25 

7/16-14 40.6 17 

1/2-13 53.9 12 

5/8-11 85.2 8 

3/4-10 124.9 5 

7/8-9 172.4 4 

1-8 225.6 2 

1 1/8-7 284.2 1 

1 1/4-7 357.6 1 

1 1/2-6 517.8 1

CARBON STEEL THREADED ROD 

Carbon steel, national coarse, threaded rod in six and twelve 

foot lengths generally available from stock. 

STAINLESS STEEL THREADED ROD 

Stainless steel, national coarse, threaded rod in six and twelve 

foot lengths generally available to ship within 1-2 weeks. 

THREADED FULL LENGTH STUDS 

Regular Steel Plain 

1/4” thru 3/4” 

A193 Gr. B7 Alloy 

3/8” thru 1 1/4” 

304 Stainless Steel 

1/4” thru 7/8” 

316 Stainless Steel 

3/8” thru 3/4” 

• Most studs from ¼" diameter to ¾" available from stock 

in 2-4 days 

• Lengths vary from 1" to 8" depending on material & diameter 

• Also Offering: Drill Rods, B7M, B8, and B8M 

Phone (314) 567-8585 Fax (314) 567-7334 

2369 Schuetz Road St. Louis, MO 63146

Weld Nuts 

Steel Aluminum Stainless Nickel Copper 

PI Series, Tab Weld Nuts are manufactured from low 

carbon steel. These Tab Weld Nuts have been carefully engineered 

to offer fast, dependable results on flat sections, confined 

corners, dose spacing, flanges and narrow channels in 

open and blind applications. The self locating pilot positions 

the nut for assembly. The height of the pilot helps prevent 

welding spatter from entering the nut threads. The nut can be welded 

to a wide variety of metal thicknesses. 

P2 Series, Tab Weld Nuts are manufactured from 

low carbon steel. These Tab Weld Nuts have been carefully 

engineered to offer fast, dependable results on flat sections, 

confined corners, dose spacing, flanges and narrow channels 

in open and blind applications. The self locating pilot positions 


welding spatter from entering the nut threads. The nut can be 

welded to a wide variety of-metal thicknesses. 

WELD NUTS AND STUDS 

Sl Series, Tab Weld Nuts are manufactured from low 

carbon steel, These Tab Weld Nuts have been carefully engineered to 

offer fast, dependable results on flat sections, confined corners, 

dose spacing, flanges and narrow channels in open and 

blind applications. The self-locating pilot positions the nut for 

assembly The height of the pilot helps prevent welding spatter 

from entering the nut threads. The nut can be welded to a 

wide variety of metal thicknesses. Prevailing Torque feature can be 

incorporated on the side opposite the pilot. 

S2 Series, Tab Weld Nuts are manufactured from 

low carbon steel, These Tab Weld Nuts have been carefully 

engineered to offer fast, dependable results on flat sections, 

confined corners, dose spacing, flanges and narrow channels 

in open and blind applications. The self locating pilot positions 


welding spatter from entering the nut threads. The nut can be welded 

to a wide variety of metal thicknesses.

Standard Series of Pilot Projection Weld Nuts are manufactured 

from low carbon steel for use with Grade 2 bolts. These weld nuts are engineered for positioning 

in Pierced or drilled holes, The pilot eliminates the need for expensive jigs or centering devices 

and helps reduce welding spatter from entering the nut threads. 

The three and six projection types provide a non-rocking, firm current 

connection during welding. The mass of the projections is increased in 

proportion to increased pilot heights to assure welds on thick or thin 

metals. 

Grade B Pilot Projection Weld Nuts are manufactured from low carbon 

steel to meet Grade B performance specifications, These nuts are designed for use with grade 5 

bolts. These weld nuts are engineered for positioning in pierced or drilled holes. The pilot eliminates 

the need for expensive jigs or centering devices and helps reduce welding spatter from entering 

the nut threads. The three and six projection types provide a nonrocking, 

firm current connection during welding. The mass of the projections 

is increased in proportion to increased pilot heights to assure weld on 

thick or thin metals 

Class 9. Standard Series, Metric Pilot Projection Weld 

Nuts are manufactured from low carbon steel for use with class 9.8 bolts. These pilot projection 

weld nuts are engineered for positioning in pierced or drilled holes. The pilot eliminates the 

need for expensive jigs or centering devices and helps reduce welding spatter from entering the 

nut threads. The three and six projection types provide a non-rocking, firm current connection 

during welding. The mass of the projections is increased in proportion to increased pilot heights 

to assure weld on thick or thin metals. 

Standard Series Countersunk Weld Nuts are manufactured from 

low carbon steel. These nuts are designed to eliminate the time consuming re-tapping of 

threads frequently required after welding. 

The bearing surface base of the nut is countersunk to prevent fouling of the 

nut threads by molten metal particles discharged during welding. Countersunk 

Weld Nuts can be welded to a blind surface as well as curved surfaces 

and over pre-punched or drilled holes. These Countersunk Weld Nuts can 

also be utilized as a spacer or weld pad.

Multiple Projection 

Weld Nuts 

B 

A 

C 

E 

F 

D 

TAB WELD NUTS - MULTIPLE PROJECTIONS 


Size 

A B C E F D 

Width Length Thickness Pilot Height 

Pilot Outside 

Diameter 

Pilot Hole 

Diameter 

Projection 

Height 

6-32 .375 .625 .094 .031 .187 .203 .020 

8-32 .375 .625 .094 .031 .203 .218 .020 

10-24 .375 .625 .094 .031 .234 .250 .020 

1/4-20 .500 .812 .105 .047 .297 .312 .025 

5/16-18 .625 1.125 .135 .078 .359 .375 .030 

3/8-16 .625 1.125 .135 .093 .437 .453 .030 

1/2-13 .812 1.250 .187 .125 .594 .609 .033 

Description 

A four-sided, internally threaded fastener with rounded edges at the two ends most opposite each other. The threaded hole runs 

through the center and has a pilot for the entire circuference of the opening which extends above the flat surface of the nut. 

Surrounding the hole in the four corners and on the same side of the nut as the pilot, are four identical round, dome-shaped 

protrusions of less height than the pilot. 

Applications/ 

Advantages 

The four projections are designed to weld simultaneously, covering a greater area than single projection nuts to achieve maximum 

weld strength. The height of the pilot minimizes the amount of welding residue that could clog the threads. 

Material 

1008 - 1010 Low Carbon Steel

BENT BOLTS 

SPECIAL AND STANDARD 

• U-Bolts 

• J-Bolts 

• Battery Bolts 

• Anchor Bolts 

• Hanger Bolts 

• Cranks 

• Roller Shafts 

...manufactured to your specifications 

Capacity ranges from #10-24 thread to 1”-8 in C1018, C1541, 

or 304 stainless. Purchase Partners manufacturing supply base 

maintains approximately 2,000,000 pounds of uncommitted 

raw material in stock to meet our customers immediate 

requirements. 

Phone 

(314) 567-8585 

Fax 

(314) 567-7334 


Spacers & Standoffs 

Hex Spacers 

F 

C 

L 

HEXAGON SPACERS 

F C F C 

Width Across 

the Flats 

(± 1/64) 

Clearance Hole 

Width Across 


the Flats 

Hole Number Max Min (± 1/64) Hole Number Max Min 

3/16 #2 .100 .090 3/8 #10 .202 .192 

3/16 #4 .124 .114 1/2 #6 .150 .140 

1/4 #2 .100 .090 1/2 #8 .176 .166 

1/4 #4 .124 .114 1/2 #10 .202 .192 

1/4 #6 .150 .140 1/2 1/4 .262 .252 

1/4 #8 .176 .166 5/8 #6 .150 .140 

5/16 #4 .124 .114 5/8 #8 .176 .166 

5/16 #6 .150 .140 5/8 #10 .202 .192 

5/16 #8 .176 .166 5/8 #1/4 .262 .252 

5/16 #10 .202 .192 5/8 #5/16 .325 .315 

3/8 #6 .150 .140 5/8 #3/8 .390 .380 

3/8 #8 .176 .166 


Description 

Applications/ 

Advantages 

Material 

A hexagonal, unthreaded, mechanical device used to hold two components at a given distance from each other. 

Hex spacers are much less common than round, used in some applications to resist twisting. Aluminum is popular for its light 

weight/ strength compromise. It is non-magnetic, performs well in severe temperatures, and has insulating properties. Brass is used 

in making high-quality spacers. It is conductive, resists corrosion, and is non-magnetic. It is costlier and heavier than aluminum and 

is usually plated zinc or nickel. Steel is used in applications requiring greater strength, but it is heavier than aluminum and does not 

resist corrosion like aluminum or brass. 

Aluminum: 2011 Aluminum (Copper: 5.0-6.0%; Silicon: 0.4% maximum; Iron: 0.7% maximum; Zinc: 0.3% maximum; 

Bismuth: 0.2-0.6%; Lead: 0.2-0.6%) 

Brass: C36000 Brass (Copper: 60.00-63.00%; Lead: 2.50-3.70%; Iron: .35% maximum) 

Steel: 12L14 Steel-Leaded Grade A (Carbon: .15% maximum; Manganese: .85-1.15%; Phosphorus: .04-.09%; Sulphur: .26-.35%)

Hex Swage Spacers 


B 

F 

D 

G 

L 

S 

HEXAGON SWAGE SPACERS 

D C S G B D C S G B 

Width 

Across 

the Flats 

(± 1/64) 

Clearance 

Hole 

Swage 

Length 

Swage 

Diameter 

Bore 

Diameter 

Width 

Across 

the Flats 

(± 1/64) 

Clearance 

Hole 

Swage 

Length 

Swage 

Diameter 

Bore 

Diameter 

Max Min Max Min Max Min Max Min Max Min Max Min Max Min Max Min 

1/4 

.125 .115 

.078 .072 

.138 .132 

.176 .166 

.108 .102 .168 .162 

.138 .132 

.078 .072 

5/16 

.168 .162 .108 .102 

.188 .185 .152 .149 

.202 .192 

.078 .072 .138 .132 

.234 .231 .203 .200 

.150 .140 

.108 .102 .168 .162 

.138 .132 

.078 .072 

.168 .162 .108 .102 

.150 .140 

.078 .072 

.138 .132 

.125 .115 

.108 .102 .168 .162 

.138 .132 

.078 .072 

5/16 

.150 .140 

.168 .162 .108 .102 

3/8 .176 .166 

.078 .072 .138 .132 

.234 .231 .203 .200 

.108 .102 .168 .162 

.138 .132 

.078 .072 

.234 .231 .203 .200 

.176 .166 

.168 .162 .108 .102 

.202 .192 

.078 .072 .138 .132 

.108 .102 .168 .162 


Description 

Applications/ 

Advantages 

Material 

A one-piece, hex-shaped, unthreaded, mechanical device which has a cylindrical protrusion at one end which is smaller in diameter than 

the hexagonal part of the spacer. 

Hex swage spacers are mounted in circuit boards to keep the board at a given distance from another object. The spacer becomes an 

integral and permanently attached part of the board. The hex-shaped variety is preferred when wrenching of the spacer is required. 

Aluminum is popular for its light weight/ strength compromise. It is non-magnetic, performs well in severe temperatures, and has 

insulating properties. Brass is used in making high-quality swage spacers. It is conductive, resists corrosion, and is non-magnetic. It is 

costlier and heavier than aluminum and is usually plated zinc or nickel. Steel is used in applications requiring greater strength, but it is 

heavier than aluminum and does not resist corrosion like aluminum or brass. 


Bismuth: 0.2-0.6%; Lead: 0.2-0.6%) 



Round Spacers 


C 

D 

L 

ROUND SPACERS 

D C D C 

Nominal 

Diameter 

(± 1/64) 


Nominal 


Diameter 

Hole Number Max Min (± 1/64) Hole Number Max Min 

3/16 #2 .100 .090 3/8 #10 .202 .192 

3/16 #4 .124 .114 1/2 #6 .150 .140 

1/4 #2 .100 .090 1/2 #8 .176 .166 

1/4 #4 .124 .114 1/2 #10 .202 .192 

1/4 #6 .150 .140 1/2 1/4 .262 .252 

1/4 #8 .176 .166 5/8 #6 .150 .140 

5/16 #4 .124 .114 5/8 #8 .176 .166 

5/16 #6 .150 .140 5/8 #10 .202 .192 

5/16 #8 .176 .166 5/8 #1/4 .262 .252 

5/16 #10 .202 .192 5/8 #5/16 .325 .315 

3/8 #6 .150 .140 5/8 #3/8 .390 .380 

3/8 #8 .176 .166 


Description 

Applications/ 

Advantages 

Material 

A cylindrical, unthreaded, mechanical device used to hold two components at a given distance from each other. 

Round spacers are the most common shape, used primarily in minimum clearance space requirements. Aluminum is popular for its 

light weight/ strength compromise. It is non-magnetic, performs well in severe temperatures, and has insulating properties. Brass is 

used in making high-quality spacers. It is conductive, resists corrosion, and is non-magnetic. It is costlier and heavier than 

aluminum and is usually plated zinc or nickel. Steel is used in applications requiring greater strength, but it is heavier than 

aluminum and does not resist corrosion like aluminum or brass. 


Bismuth: 0.2-0.6%; Lead: 0.2-0.6%) 




Round Swage Spacers 

B 

D 

G 

D 

L 

S 

ROUND SWAGE SPACERS 

D C S G B D C S G B 

Nominal 

Diameter 

Clearance 

Hole 

Swage 

Length 

Swage 

Diameter 

Bore 

Diameter Nominal 

Clearance 

Hole 

Swage 

Length 

Swage 

Diameter 

Bore 

Diameter 

Diameter 

Max Min Max Min Max Min Max Min Max Min Max Min Max Min Max Min 

1/4 

.125 .115 

.078 .072 

.138 .132 

.176 .166 

.108 .102 .168 .162 

.138 .132 

.078 .072 

5/16 

.168 .162 .108 .102 

.188 .185 .152 .149 

.202 .192 

.078 .072 .138 .132 

.234 .231 .203 .200 

.150 .140 

.108 .102 .168 .162 

.138 .132 

.078 .072 

.168 .162 .108 .102 

.150 .140 

.078 .072 

.138 .132 

.125 .115 

.108 .102 .168 .162 

.138 .132 

.078 .072 

5/16 

.150 .140 

.168 .162 .108 .102 

3/8 .176 .166 

.078 .072 .138 .132 

.234 .231 .203 .200 

.108 .102 .168 .162 

.138 .132 

.078 .072 

.234 .231 .203 .200 

.176 .166 

.168 .162 .108 .102 

.202 .192 

.078 .072 .138 .132 

.108 .102 .168 .162 


Description 

Applications/ 

Advantages 

Material 

A one-piece, cylindrical, unthreaded, mechanical device which has a protrusion at one end of the same shape but smaller in diameter. 

Round swage spacers are mounted in circuit boards to keep the board at a given distance from another object. The spacer becomes an 

integral and permanently attached part of the board. Aluminum is popular for its light weight/ strength compromise. It is non-magnetic, 

performs well in severe temperatures, and has insulating properties. Brass is used in making high-quality swage spacers. It is 

conductive, resists corrosion, and is non-magnetic. It is costlier and heavier than aluminum and is usually plated zinc or nickel. Steel is 

used in applications requiring greater strength, but it is heavier than aluminum and does not resist corrosion like aluminum or brass. 


Bismuth: 0.2-0.6%; Lead: 0.2-0.6%) 



Washers Fender Steel 

ID OD 

GA 

TH 

FENDER WASHERS 

Wrought Washer 

Bolt Size Inside Diameter Outside Diameter 

Max 

Thickness 

Min 

Approximate 

Number in 50 

Pounds 

10 7/32 1 .080 .051 3500 

10 7/32 1-1/4 .080 .051 3000 

1/4 9/32 1 .080 .051 3750 

1/4 9/32 1-1/4 .080 .051 2300 

1/4 9/32 1-1/2 .080 .051 1550 

5/16 11/32 1-1/4 .080 .051 2400 

5/16 11/32 1-1/2 .080 .051 1600 

3/8 13/32 1-1/4 .080 .051 2350 

3/8 13/32 1-1/2 .080 .051 1650 

1/2 17/32 2 .080 .051 950 

Description 

A flat washer with significantly more surface area than a USS or SAE washer. They are also made from a thinner gauge steel than 

most flat washers. 

Applications/ 

Advantages 

Used where an extra wide bearing surface is required. Originally designed for auto body repair work, they are also used in sheet 

metal, plumbing, and electrical work. Also used to attach signs to posts, to install drywall and wood paneling. 

Material 

Washers shall be punched from hot-rolled, hot-rolled and pickled or cold-rolled steel, or shall be machined from bar stock or tubing, 

or may be forged at the manufacturer's option. 

Plating 


Steel 

Machine Screw 

Washers 

ID OD 

TH 

MACHINE SCREW WASHERS 

Washer Size 

Inside Diameter Outside Diameter Thickness 


2 0.097 0.087 0.224 0.214 0.022 0.014 

3 0.114 0.104 0.255 0.245 0.023 0.018 

4 0.130 0.120 0.286 0.276 0.030 0.022 

5 0.145 0.135 0.286 0.276 0.030 0.022 

6 0.155 0.145 0.380 0.370 0.036 0.028 

8 0.175 0.165 0.380 0.370 0.036 0.028 

10 0.209 0.199 0.443 0.433 0.036 0.028 

12 0.232 0.222 0.505 0.495 0.052 0.044 

14 0.270 0.260 0.567 0.557 0.052 0.044 

Description 

The smallest type of flat washer with an outside diameter equal to slightly twice the size of the inside diameter. 

Applications/ 

Advantages 

Designed for use with machine screws in general industrial applications. 

Material 

Washers are punched from cold-rolled steel. 

Plating 


Washers Standard Flat 

18-8 Stainless 

Steel 

ID OD 

TH 

STANDARD FLAT WASHERS - 18-8 STAINLESS STEEL 

OD ID TH 

Size 

Outside Diameter Inside Diameter Thickness 

Nominal Nominal Nominal 

4 .312 .125 .031 

6 .375 .156 .031 

8 .375 .172 .031 

10 .438 .203 .031 

1/4 .625 .281 .050 

5/16 .750 .344 .050 

3/8 .875 .391 .050 

3/8 1.000 .391 .062 

7/16 1.125 .500 .050 

1/2 1.250 .562 .055 - .062 

5/8 1.500 .688 .062 

3/4 1.750 .812 .075 

7/8 2.000 .938 .095 - .109 

1 2.000 1.062 .095 - .109 

Description 

A thin, flat, circular stamping with a centrally located hole, made from an 18-8 austenitic stainless steel. 

Applications/ 

Advantages 

Designed for use with 18-8 stainless steel screws and nuts in general industrial applications where parts are subject to corrosion. 

Material 

18-8 stainless steel

316 Stainless 

Steel 

Standard Flat 

Washers 

ID OD 

TH 

COMMERCIAL FLAT WASHERS - 316 STAINLESS STEEL 

OD ID TH 

Size 


Nominal Nominal Nominal 

1/4 .625 .281 .045 

1/4 .688 .281 .045 

5/16 .750 .344 .045 

3/8 .875 .406 .045 

3/8 1.000 .406 .045 

1/2 1.250 .531 .055 

5/8 1.500 .688 .075 

3/4 1.750 .812 .075 

7/8 2.000 .938 .095 

7/8 2.250 .938 .105 

1 2.000 1.062 .095 

1 2.500 1.062 .105 

Description 

A thin, flat, circular stamping with a centrally located hole, made from a 316 austenitic stainless steel. 

Applications/ 

Advantages 

Designed for use with 316 stainless steel screws and nuts in general industrial applications where parts are subject to corrosion. 

Material 

316 stainless steel

Low Carbon 

Steel 

SAE Flat 

Washers 

ID OD 

GA 

TH 

Bolt Size 

SAE LOW CARBON WASHERS 


Nominal Max Min Nominal Max Min 

American 

Standard 

(Gauge) 

Max 

Min 

ANSI B18.22.1 

Approximate 

Number per 

50 Pounds 

4 5/16 0.320 0.307 1/8 0.133 0.120 (1/32) .040 .025 83300 

6 3/8 0.390 0.370 5/32 0.164 0.151 18 (3/64) .065 .036 39500 

8 7/16 0.453 0.433 3/16 0.196 0.183 18 (3/64) .065 .036 29500 

10 1/2 0.515 0.495 7/32 0.227 0.214 18 (3/64) .065 .036 22750 

3/16 9/16 0.577 0.557 1/4 0.265 0.245 18 (3/64) .065 .036 

12 9/16 0.577 0.557 1/4 0.265 0.245 16 (1/16) .080 .051 14700 

1/4 5/8 0.640 0.620 9/32 0.296 0.276 16 (1/16) .080 .051 11100 

5/16 11/16 0.703 0.681 11/32 0.359 0.339 16 (1/16) .080 .051 9750 

3/8 13/16 0.827 0.805 13/32 0.419 0.401 16 (1/16) .080 .051 7000 

7/16 59/64 0.937 0.915 15/32 0.484 0.464 16 (1/16) .080 .051 5500 

1/2 1-1/16 1.092 1.055 17/32 0.546 0.526 13 (3/32) .121 .074 2800 

9/16 1-3/16 1.186 1.149 19/32 0.609 0.589 13 (3/32) .121 .074 2250 

5/8 1-5/16 1.342 1.305 21/32 0.686 0.649 13 (3/32) .121 .074 1850 

3/4 1-1/2 1.499 1.462 13/16 0.842 0.805 10 (9/64) .160 .108 1050 

7/8 1-3/4 1.780 1.743 15/16 0.968 0.931 10 (9/64) .160 .108 775 

1 2 2.030 1.993 1-1/16 1.092 1.055 10 (9/64) .160 .108 585 

1-1/8 2-1/4 2.280 2.243 1-3/16 1.280 1.243 10 (9/64) .160 .108 460 

1-1/4 2-1/2 2.530 2.493 1-5/16 1.405 1.368 9 (5/32) .192 .136 335 

1-3/8 2-3/4 2.780 2.743 1-7/16 1.530 1.493 9 (5/32) .213 .136 275 

1-1/2 3 3.030 2.993 1-9/16 1.655 1.618 9 (5/32) .213 .153 230 

Description 

Applications/ 

Advantages 

Material 

Plating 

Similar to a USS washer, but with slightly smaller inside and outside diameters. Also, most but not all SAE washers are made from 

thinner materials than USS washers. 

SAE washers were designed to serve similar purposes as the USS washers, but specifically to meet the requirements in the field of 

automotive engineering. 

Plain washers shall be punched from hot-rolled, hot-rolled and pickled, or cold-rolled steel, or shall be machined from bar stock or 

tubing, or may be forged at the manufacturer's option. 

See Appendix-A for information about the plating of steel flat washers.

Flat 

SAE Through-Hardened 

Washers 

* 

ID OD 

GA 

TH 

x 

Bolt Size 

SAE THROUGH-HARDENED FLAT WASHERS 

ANSI B18.22.1, 


Outside Diameter Inside Diameter Thickness Approximate 

Number per 50 

Nominal Max Min Nominal Max Min Max Min Pounds 

1/4 5/8 0.640 0.620 9/32 0.296 0.276 .072 .055 10000 

5/16 11/16 0.703 0.681 11/32 0.359 0.339 .072 .055 10000 

3/8 13/16 0.827 0.805 13/32 0.419 0.401 .072 .055 7000 

7/16 59/64 0.937 0.915 15/32 0.484 0.464 .072 .055 5000 

1/2 1-1/16 1.092 1.055 17/32 0.546 0.526 .121 .097 2425 

9/16 1-3/16 1.186 1.149 19/32 0.609 0.589 .121 .097 2250 

5/8 1-5/16 1.342 1.305 21/32 0.686 0.649 .146 .122 1340 

3/4 1-15/32 1.499 1.462 13/16 0.842 0.805 .146 .122 1120 

7/8 1-3/4 1.780 1.743 15/16 0.968 0.931 .160 .136 695 

1 2 2.030 1.993 1-1/16 1.092 1.055 .160 .136 555 

1-1/8 2-1/4 2.280 2.243 1-1/4 1.280 1.243 .160 .136 435 

1-1/4 2-1/2 2.530 2.493 1-3/8 1.405 1.368 .160 .136 350 

1-1/2 3 3.030 2.993 1-5/8 1.655 1.618 .160 .136 240 

1-3/4 3-3/8 3.405 3.368 1-7/8 1.905 1.868 .201 .178 150 

2 3-3/4 3.780 3.748 2-1/8 2.155 2.118 .201 .178 125 

Description 

Applications/ 

Advantages 

Material 

Dimensionally equivalent to the low carbon SAE flat washer counterparts, but with tighter tolerances on thickness, manufactured 

from a higher grade of steel and heat-treated. 

Designed to perform the same functions as low carbon SAE flat washers, but for use specifically with high-strength hardened steel 

bolts. 

SAE 1035 - 1050 steel 


Plating 

See Appendix-A for information about the plating of through-hardened flat washers. 

*Product standards require all through-hardened washers 1/4” diameter and larger to bear the insignia identifying its manufacturer. “X” represents one location 

such an insignia may appear.

Washers 

USS Flat 

Low Carbon 

Steel 

ID OD 

GA 

TH 

Bolt Size 

USS LOW CARBON WASHERS 


Nominal Max Min Nominal Max Min 

American 

Standard 

(Gauge) 

Max 

Min 

ANSI B18.22.1 

Approximate 

Number per 50 

Pounds 

3/16 9/16 0.577 0.557 1/4 0.265 0.245 18 (3/64) .065 .036 18050 

1/4 3/4 0.749 0.727 5/16 0.327 0.307 16 (1/16) .080 .051 7450 

5/16 7/8 0.905 0.868 3/8 0.390 0.370 14 (5/64) .104 .064 4350 

3/8 1 1.030 0.993 7/16 0.453 0.433 14 (5/64) .104 .064 3350 

7/16 1-1/4 1.280 1.243 1/2 0.515 0.495 14 (5/64) .104 .064 2050 

1/2 1-3/8 1.405 1.368 9/16 0.577 0.557 12 (7/64) .132 .086 1300 

9/16 1-1/2 1.499 1.462 5/8 0.640 0.620 21 (7/64) .132 .086 1100 

5/8 1-3/4 1.780 1.743 11/16 0.718 0.681 10 (9/64) .160 .108 650 

3/4 2 2.030 1.993 13/16 0.842 0.805 9 (5/32) .177 .122 455 

7/8 2-1/4 2.280 2.243 15/16 0.968 0.931 8 (11/64) .192 .136 325 

1 2-1/2 2.530 2.493 1-1/16 1.092 1.055 8 (11/64) .192 .136 265 

1-1/8 2-3/4 2.780 2.743 1-1/4 1.280 1.243 8 (11/64) .192 .136 225 

1-1/4 3 3.030 2.993 1-3/8 1.405 1.368 8 (11/64) .192 .136 190 

1-3/8 3-1/4 3.295 3.240 1-1/2 1.545 1.490 7 (3/16) .213 .153 150 

1-1/2 3-1/2 3.545 3.490 1-5/8 1.670 1.615 7 (3/16) .213 .153 130 

1-5/8 3-3/4 3.795 3.740 1-3/4 1.795 1.740 7 (3/16) .213 .153 115 

1-3/4 4 4.045 3.990 1-7/8 1.920 1.865 7 (3/16) .213 .153 100 

1-7/8 4-1/4 4.295 4.240 2 2.045 1.990 7 (3/16) .213 .153 90 

2 4-1/2 4.545 4.490 2-1/8 2.170 2.115 7 (3/16) .213 .153 79 

2-1/4 4-3/4 4.795 4.740 2-3/8 2.420 2.365 5 (7/32) .248 .193 60 

2-1/2 5 5.045 4.990 2-5/8 2.670 2.615 4 (15/64) .280 .210 52 

2-3/4 5-1/4 5.315 5.240 2-7/8 2.940 2.865 3 (1/4) .310 .228 45 

3 5-1/2 5.565 5.490 3-1/8 3.190 3.115 2 (5/32) .327 .249 43 

Description 

Applications/ 

Advantages 

Material 

Plating 

A thin, flat, circular steel part with a centrally located hole. 

Washers are designed for assembly around a bolt or screw, between the bearing surface of the fastener and the part to which it is 

attached. Flat washers are used to improve stress distribution, and to span large clearance holes. USS washers are designed to 

meet the majority of industrial applications in manufacturing, maintenance and repair. 

Plain washers shall be punched from hot-rolled, hot-rolled and pickled, or cold-rolled steel, or shall be machined from bar stock or 


See Appendix-A for information about the plating of low carbon flat washers.

Washers 

USS Through-Hardened 

Flat 

* 

ID OD 

GA 

TH 

x 

Bolt Size 

USS THROUGH-HARDENED FLAT WASHERS 

ANSI B18.22.1, 


Outside Diameter Inside Diameter Thickness Approximate 

Number per 50 

Nominal Max Min Nominal Max Min Max Min Pounds 

1/4 3/4 0.749 0.727 5/16 0.327 0.307 .072 .055 7500 

5/16 7/8 0.905 0.868 3/8 0.390 0.370 .080 .064 5000 

3/8 1 1.030 0.993 7/16 0.453 0.433 .080 .064 3500 

7/16 1-1/4 1.280 1.243 1/2 0.515 0.495 .080 .064 2500 

1/2 1-3/8 1.405 1.368 9/16 0.577 0.557 .121 .097 1500 

9/16 1-1/2 1.499 1.462 5/8 0.640 0.620 .121 .097 1100 

5/8 1-3/4 1.780 1.743 21/32 0.687 0.649 .146 .122 700 

3/4 2 2.030 1.993 13/16 0.842 0.805 .146 .122 500 

7/8 2-1/4 2.280 2.243 15/16 0.968 0.931 .160 .136 350 

1 2-1/2 2.530 2.493 1-1/16 1.092 1.055 .160 .136 300 

1-1/8 2-3/4 2.780 2.743 1-1/4 1.280 1.243 .160 .136 250 

1-1/4 3 3.030 2.993 1-3/8 1.405 1.368 .160 .136 200 

1-1/2 3-1/2 3.545 3.490 1-5/8 1.670 1.615 .160 .136 150 

Description 

Applications/ 

Advantages 

Material 

Dimensionally similar to the USS plain washer counterparts, but with tighter tolerances on thickness, manufactured from a higher 

grade of steel and heat-treated. 

Designed to perform the same functions as USS plain washers, but for use specifically with high-strength hardened steel bolts. 

SAE 1035 - 1050 steel 


Plating 

See Appendix-A for information about the plating of through-hardened flat washers. 

*Product standards require all through-hardened washers 1/4” diameter and larger to bear the insignia identifying its manufacturer. “X” represents one location 

such an insignia may appear.

Washers Countersunk External Tooth Steel 

Lockwashers 

B 

A 

D 

C 

80˚- 

82˚ 

COUNTERSUNK EXTERNAL TOOTH LOCKWASHERS 

ASME B18.21.1- 

1994 

A B C D 

Nominal Washer Size 

Inside Diameter 

Outside 

Diameter 

Thickness 

Length 

Max Min Approx Max Min Max Min 

4 0.112 0.123 0.113 0.213 0.019 0.015 0.065 0.050 

6 0.138 0.150 0.140 0.289 0.021 0.017 0.092 0.082 

8 0.164 0.177 0.167 0.322 0.021 0.017 0.105 0.088 

10 0.190 0.205 0.195 0.354 0.025 0.020 0.099 0.083 

12 0.216 0.231 0.220 0.421 0.025 0.020 0.128 0.118 

1/4 0.250 0.267 0.255 0.454 0.025 0.020 0.128 0.113 

5/16 0.3125 0.333 0.318 0.599 0.028 0.023 0.192 0.165 

3/8 0.375 0.398 0.383 0.765 0.034 0.028 0.255 0.242 

1/2 0.500 0.529 0.512 0.976 0.045 0.037 0.304 0.294 

Description 

Applications/ 

Advantages 

Material 

An external tooth lock washer with a conical shaped bearing surface. 

Designed for use with flat or oval head screws with countersunk angles of 82° or 100°. 

SAE 1050 - 1065 or equivalent spring steel 


Twist Test 

The rim of the washer shall be cut and the severed ends shall be gripped by pliers (or a vise and pliers). The ends shall separate in 

the form of a helix to a distance equal to the inside diameter of the washer without fracturing. When the washer ultimately 

fractures beyond this prescribed limit, the structure at the breaking point shall show a fine grain. Up to the point of fracture, the 

washer shall retain a firm, springy reaction. 

Plating 

See Appendix-A for information on the plating of steel lock washers.

Washers External Tooth 

Steel & Stainless 

Lockwashers 

B 

A 

C 

EXTERNAL TOOTH LOCK WASHERS 

ASME 

B18.21.1-1994 

A B C 


Inside Diameter Outside Diameter Thickness 


#2 0.086 0.095 0.086 0.189 0.177 0.013 0.010 

#3 0.099 0.109 0.102 0.235 0.220 0.015 0.012 

#4 0.112 0.123 0.115 0.260 0.245 0.019 0.014 

#5 0.125 0.136 0.129 0.285 0.270 0.019 0.015 

#6 0.138 0.150 0.141 0.320 0.305 0.022 0.016 

#8 0.164 0.176 0.168 0.381 0.365 0.023 0.018 

#10 0.190 0.204 0.195 0.410 0.395 0.025 0.020 

#12 0.216 0.231 0.221 0.475 0.460 0.028 0.023 

1/4 0.250 0.267 0.256 0.510 0.494 0.028 0.023 

5/16 0.312 0.332 0.320 0.610 0.588 0.034 0.028 

3/8 0.375 0.398 0.384 0.694 0.670 0.040 0.032 

7/16 0.438 0.464 0.448 0.760 0.740 0.040 0.032 

1/2 0.500 0.530 0.513 0.900 0.880 0.045 0.037 

9/16 0.5625 0.596 0.576 0.985 0.960 0.045 0.037 

5/8 0.625 0.663 0.641 1.070 1.045 0.050 0.042 

3/4 0.750 0.795 0.768 1.260 1.220 0.055 0.047 

7/8 0.875 0.927 0.897 1.410 1.380 0.060 0.052 

1 1.000 1.060 1.025 1.620 1.590 0.067 0.059 

Description 

Applications/ 

Advantages 

Material 

Hardness 

Twist Test 

Plating 

A hardened circular washer with twisted prongs or "teeth" which extend out from the outer edge of the washer. 

This is the most preferable of all tooth-lock washers. It offers the greatest locking efficiency since the teeth are on the largest 

radius and provide greater torsional resistance. 

Steel: SAE 1050 - 1065 spring steel. 

18-8 Stainless: SAE 301 - 305 stainless steel. 

316 Stainless: SAE 316 stainless steel. 


Steel: Rockwell C40 - 50 

18-8 Stainless: Rockwell C20 - 45 

410 Stainless: Rockwell C40 - 50 





See Appendix-A for information on the plating of steel lock washers.

Steel 

Lockwashers 

Combination Tooth 

Washers 

B 

A 

C 

INTERNAL-EXTERNAL TOOTH LOCK WASHERS 

ASME B18.21.1- 

1994 

A B C 


Inside Diameter Outside Diameter * Thickness 


6 0.138 0.150 0.141 0.510 0.495 0.028 0.023 

8 0.164 0.176 0.168 0.610 0.580 0.034 0.028 

10 0.190 0.204 0.195 0.610 0.580 0.034 0.028 

1/4 0.250 0.267 0.256 0.760 0.725 0.040 0.032 

5/16 0.312 0.332 0.320 0.900 0.865 0.040 0.032 

3/8 0.375 0.398 0.384 0.985 0.965 0.045 0.037 

7/16 0.438 0.464 0.448 1.070 1.045 0.050 0.042 

1/2 0.500 0.530 0.512 1.260 1.220 0.055 0.047 

5/8 0.625 0.663 0.640 1.410 1.380 0.060 0.052 

*Industry standards allow for washers with larger outside diameter dimensions. 

Description 

Applications/ 

Advantages 

Material 

A hardened circular washer with twisted prongs or teeth protruding from both the inside and outer edges of the washer. 

Preferred lockwasher in the following situations: (1) where a larger bearing surface is desired; (2) for an optimum electrical 

connection; (3) where the hole is oversized or out of round; (4) as an insert between two adjustable pieces where a longitudinal or 

rotational adjustment must be maintained. 



Twist Test 





Plating 

See Appendix-A for information about the plating of steel lock washers.

Steel 

Lockwashers 

Combination Tooth 

Washers 

B 

A 

C 

INTERNAL-EXTERNAL TOOTH LOCK WASHERS 

ASME B18.21.1- 

1994 

A B C 


Inside Diameter Outside Diameter * Thickness 


6 0.138 0.150 0.141 0.510 0.495 0.028 0.023 

8 0.164 0.176 0.168 0.610 0.580 0.034 0.028 

10 0.190 0.204 0.195 0.610 0.580 0.034 0.028 

1/4 0.250 0.267 0.256 0.760 0.725 0.040 0.032 

5/16 0.312 0.332 0.320 0.900 0.865 0.040 0.032 

3/8 0.375 0.398 0.384 0.985 0.965 0.045 0.037 

7/16 0.438 0.464 0.448 1.070 1.045 0.050 0.042 

1/2 0.500 0.530 0.512 1.260 1.220 0.055 0.047 

5/8 0.625 0.663 0.640 1.410 1.380 0.060 0.052 

*Industry standards allow for washers with larger outside diameter dimensions. 

Description 

Applications/ 

Advantages 

Material 

A hardened circular washer with twisted prongs or teeth protruding from both the inside and outer edges of the washer. 

Preferred lockwasher in the following situations: (1) where a larger bearing surface is desired; (2) for an optimum electrical 

connection; (3) where the hole is oversized or out of round; (4) as an insert between two adjustable pieces where a longitudinal or 

rotational adjustment must be maintained. 



Twist Test 





Plating 

See Appendix-A for information about the plating of steel lock washers.

Washers 

Heavy Split 

Steel 

Lockwashers 

t T A B 

W 

HEAVY SPLIT HELICAL SPRING LOCK WASHERS 

ASME B18.21.1- 

1994 


A 

B 

(T+t) 

2 

Mean Section 


Outside Diameter 

Section Width 

Thickness 

Max Min Min Min 

W 

1/4 0.250 0.260 0.252 0.489 0.077 0.110 

5/16 0.312 0.322 0.314 0.593 0.097 0.130 

3/8 0.375 0.385 0.377 0.688 0.115 0.145 

7/16 0.438 0.450 0.440 0.784 0.133 0.160 

1/2 0.500 0.512 0.502 0.879 0.151 0.176 

9/16 0.562 0.574 0.564 0.975 0.170 0.193 

5/8 0.625 0.641 0.628 1.087 0.189 0.210 

3/4 0.750 0.766 0.753 1.285 0.226 0.244 

7/8 0.875 0.894 0.878 1.489 0.266 0.281 

1 1.000 1.024 1.003 1.700 0.306 0.319 

1-1/4 1.250 1.280 1.254 2.104 0.384 0.393 

Description 

Applications/ 

Advantages 

Material 

Similar to a regular split lock washer, but with a greater outside diameter and thickness. 

The increased bearing area makes this suitable for applications involving higher tightening torques. 

SAE 1055 - 1065 carbon steel. 


Twist Test 

Plating 

With the washer in a vice with the split ends free and straight above the vice jaws, a 90°segment of the free end is gripped with a 

wrench and bent. Washers are to withstand being twisted through a 90° angle without signs of fracture. When the washer 

ultimately fractures beyond the prescribed 90° limit, the structure at the breaking point shall show a fine grain. 

See Appendix-A for information about plating heavy split lock washers.

Washers 

Heavy Split 

Steel 

Lockwashers 

t T A B 

W 

HEAVY SPLIT HELICAL SPRING LOCK WASHERS 

ASME B18.21.1- 

1994 


A 

B 

(T+t) 

2 

Mean Section 



Section Width 

Thickness 

Max Min Min Min 

W 

1/4 0.250 0.260 0.252 0.489 0.077 0.110 

5/16 0.312 0.322 0.314 0.593 0.097 0.130 

3/8 0.375 0.385 0.377 0.688 0.115 0.145 

7/16 0.438 0.450 0.440 0.784 0.133 0.160 

1/2 0.500 0.512 0.502 0.879 0.151 0.176 

9/16 0.562 0.574 0.564 0.975 0.170 0.193 

5/8 0.625 0.641 0.628 1.087 0.189 0.210 

3/4 0.750 0.766 0.753 1.285 0.226 0.244 

7/8 0.875 0.894 0.878 1.489 0.266 0.281 

1 1.000 1.024 1.003 1.700 0.306 0.319 

1-1/4 1.250 1.280 1.254 2.104 0.384 0.393 

Description 

Applications/ 

Advantages 

Material 

Similar to a regular split lock washer, but with a greater outside diameter and thickness. 

The increased bearing area makes this suitable for applications involving higher tightening torques. 

SAE 1055 - 1065 carbon steel. 


Twist Test 

Plating 




See Appendix-A for information about plating heavy split lock washers.

Washers Regular & High-Alloy Split 

Steel & Stainless 

Lockwashers 

t T A B 

W 

MEDIUM &HIGH ALLOY SPLIT HELICAL SPRING LOCK WASHERS 

ASME B18.21.1- 

1994 

(T+t) 

A 

B 

W 

2 


Inside Diameter Outside Diameter Mean Section Thickness Section Width 

Max Min Max Min Min 

#2 0.086 0.094 0.088 0.172 0.020 0.035 

#3 0.099 0.107 0.101 0.195 0.025 0.040 

#4 0.112 0.120 0.114 0.209 0.025 0.040 

#5 0.125 0.133 0.127 0.236 0.031 0.047 

#6 0.138 0.148 0.141 0.250 0.031 0.047 

#8 0.164 0.174 0.167 0.293 0.040 0.055 

#10 0.190 0.200 0.193 0.334 0.047 0.062 

#12 0.216 0.227 0.220 0.377 0.056 0.070 

1/4 0.250 0.260 0.252 0.487 0.062 0.109 

5/16 0.312 0.322 0.314 0.583 0.078 0.125 

3/8 0.375 0.385 0.377 0.680 0.094 0.141 

7/16 0.438 0.450 0.440 0.776 0.109 0.156 

1/2 0.500 0.512 0.502 0.869 0.125 0.171 

9/16 0.562 0.574 0.564 0.965 0.141 0.188 

5/8 0.625 0.641 0.628 1.073 0.156 0.203 

3/4 0.750 0.766 0.753 1.265 0.188 0.234 

7/8 0.875 0.894 0.878 1.459 0.219 0.266 

1 1.000 1.024 1.003 1.656 0.250 0.297 

1-1/8 1.125 1.153 1.129 1.847 0.281 0.328 

1-1/4 1.250 1.280 1.254 2.036 0.312 0.359 

1-3/8 1.375 1.408 1.379 2.219 0.344 0.391 

1-1/2 1.500 1.534 1.504 2.419 0.375 0.422 

2 2.000 2.039 2.008 2.936 0.422 0.427 

Description 

Applications/ 

Advantages 

Material 

Hardness 

Twist Test 

Plating 

Regular: A coiled, hardened, split circular washer with a slightly trapezoidal wire section. 

High-Alloy: Dimensionally identical to a regular split lock washer but made from 4037 alloy steel (sizes over 1" are equivalent to 

heavy split lockwashers in size and material). 

Stainless: A regular split lock washer made from austenitic stainless steel. 

Regular: (A) Applies greater bolt tension per unit of applied torque; (B) Provides a hardened bearing surface, creating more uniform 

torque control; (C) Provides more uniform load distribution; (D) Resists loosening caused by vibration and corrosion; 

(E) Is preferred lockwasher for use with hardened bearing surfaces. 

High-Alloy: Designed for use with Grade-5 & Grade-8 bolts and nuts. 

Stainless: For use with stainless nuts and screws of a similar stainless alloy in corrosive environments. 

Regular: SAE 1055 - 1065 carbon steel. 

High-Alloy: 1/4 thru 1": 4037 alloy steel; 1-1/8 thru 1-1/2": SAE 1055 - 1065 carbon steel 

18-8 Stainless: SAE 302 - 305 stainless steel. 


Regular & High-Alloy: Rockwell C38 - 46 

Stainless: Rockwell C35 - 43. 




See Appendix-A for information about the plating of carbon steel and alloy steel lock washers.

Steel 

Beveled 

Washers 

T 

T 

L 

A 

L 

E 

Square Beveled 

Clipped Square Beveled 

HARDENED BEVELED WASHERS 

ASME B18.2.6- 

1996 

Inside Diameter - A L T E 


Basic 

Plus 

Tolerance 

Minus 

Minimum Side 

Length 

Thickness 

Minimum Edge 

Distance 

1/2 0.500 0.531 0.0313 0 1.750 0.313 0.438 

5/8 0.625 0.688 0.0313 0 1.750 0.313 0.547 

3/4 0.750 0.813 0.0313 0 1.750 0.313 0.656 

7/8 0.875 0.938 0.0313 0 1.750 0.313 0.766 

1 1.000 1.125 0.0313 0 1.750 0.313 0.875 

1-1/8 1.125 1.250 0.0313 0 2.250 0.313 0.984 

1-1/4 1.250 1.375 0.0313 0 2.250 0.313 1.094 

1-3/8 1.375 1.500 0.0313 0 2.250 0.313 1.203 

1-1/2 1.500 1.625 0.0313 0 2.250 0.313 1.313 

Description 

A flat washer which can be square or circular, with one bearing surface having an oblique angle. 

Applications/ 

Advantages 

Material 

Hardness 

Plating 

Commonly used when fastening bolts through the flanges of "I" beams. 

Washers shall be made from a carbon steel which conforms to the following chemical composition requirements (heat analysis): 

Phosphorus: 0.040% maximum; Sulfur: 0.050% maximum 

Plain or Zinc-plated - Rockwell C 38 - 45 

Hot-Dip Galvanized - Rockwell C 26 - 45 


Washers 

Countersunk Finishing 

Steel 

OD 

ID 

ID OD 

COUNTERSUNK FINISHING WASHERS 



Screw Size 

Nominal Max Min 

Overall Height 

4 3/8 .150 .120 3/32 

6 15/32 .200 .170 5/64 

8 17/32 .210 .180 7/64 

10 19/32 .265 .235 7/64 

12 21/32 .289 .259 1/8 

1/4 25/32 .335 .305 5/32 

Description 

Applications/ 

Advantages 

Material 

Plating 

A formed circular washer designed for use with flat or oval head screws. This is a raised type of finishing washer which is convex 

shaped. For use with 82° countersunk flat and oval head screws. 

Designed for accommodating the heads of countersunk screws. It provides additional bearing area on the material being fastened 

and can be used to give a neat, finished appearance. 

Washers shall be punched from hot-rolled, hot-rolled and pickled or cold-rolled steel, or shall be machined from bar stock or 


See Appendix-A for information on the plating of countersunk finishing washers.

Glossary of Terms 

Allowance: An intentional difference between the material limits of mating parts, either in 

the minimum clearance or maximum interference between the parts. 

Angularity: The angle between the axes of two fastener surfaces. 

Anvil: The part of an installation tool nose assembly used to swage the collar of a lock bolt 

fastener. Commonly known as a swaging anvil. 

Band Anneal: Induction heat treatment used on certain rivets and High-Strength Hexert® 

inserts. 

Bearing Surface: The area that carries load across the face of the material. 

Binding Head: One with a rounded top surface, slightly tapered sides and a flat bearing 

surface, a portion of which may be undercut adjacent to the shank. 

Blind Fastener: A fastener that can be placed with access to only one side of an 

application. 

Blind Side: The side of the joint, which cannot be accessed (e.g. the inside surface of a 

tubular or box section). 

Body: In blind fasteners, the portion of the rivet that expands into the parent material. In 

threaded fasteners, the unthreaded portion of the fastener under the head. 

Body Diameter: The diameter of the unthreaded portion of a threaded shank. 

1

Bolt: An externally threaded fastener that requires a nut to secure the fastened joint. 

Boss: Protuberance on a plastic part designed to add strength and/or facilitate fastening 

or alignment. 

Bottom up: Rivet tool pointing up. 

Breaker Groove: A weakened groove in the stem or pin of a fastener allowing breakage 

at a pre-determined load. 

Break stem: A fastener, which is installed by gripping and pulling the end of the 

mandrel/stem. As installation is completed, the end of the stem fractures at the breaker 

groove and is discarded, leaving the head of the stem in the fastener body. 

Broach (with reference to Avdel® Speed Fastening System):The action of pulling the 

mandrel though the speed fastener in order to place it. 

Broach Load (with reference to Avdel® Speed Fastening System):The force required to 

pull the mandrel through the speed fastener in order to place it. 

BSW - Whitworth Thread: An imperial thread form standard, no longer in mainstream 

use. It is covered by British Standard BS 84. 

Bulbing: The physical action of the fastener body swelling (expanding radially) against the 

rear face of the joint when placed. Generally found in break stem fasteners and threaded 

inserts. 

Button Head: For threaded fasteners, one with a low, rounded top surface and a large, 

flat bearing surface. 

2

Case Hardened: Heat treated fastener in which the surface is harder than the core. 

Chamfer point: A truncated cone point, the end of which is approximately flat and 

perpendicular to the fastener axis. On threaded fasteners, chamfer points generally have 

included angles of 45º to 90º and a point diameter equal to or slightly less than the minor 

diameter. 

Clamp Load: The total load across the joint interface in service. This may vary during 

service life. 

Clench: The ability of a fastener to draw together and hold together initially separated joint 

material components, during the installation process (i.e. “gap closing” ability). 

Collar Cropper/Splitter 

An installation tool attachment that removes collars from lock bolt fasteners. 

Cold form: Creating components by using forces greater than the material's elastic limit to 

create extrusions and upsets. 

Complete Hole Fill: Fasteners with this feature will expand to fill irregular, slotted, 

oversized or misaligned holes. 

Cone Point: Sharp, conical end of a fastener designed to perforate the application 

material or align the fastener during assembly. 

Continuous Feed: Automatic feeding of parts with no operator interjection except for 

keeping the feeder bowl full. 

3

Countersunk Head: One that is designed to be flush with the surface after installation. 

Crack: A clean, crystalline fracture which passes through or across the grain boundaries 

without inclusion of foreign elements. 

Creep: Permanent deformation of a material caused by time, temperature and pressure. 

Draft Angle: The amount of slope in the boss hole and/or outside edge, measured from a 

line perpendicular to the bottom of the boss. 

Drive Screw: The male threaded part in the nose of a threaded insert installation tool, 

which engages the female thread of inserts OR a type of fastener with a high helix angle 

that is installed into a hole with a press or hammer. 

Elongation: The stretching of a fastener along its axis by an applied load. 

Endurance Limit/ Strength: The maximum alternating stress that a fastener can 

withstand for a specified number of stress cycles without failure. 

Fatigue Strength: The ability of a fastener to resist fracture when subjected to cyclic 

variations in stress. 

Fillers: Inert additives or reinforcements that are added to a polymer to change one or 

more of its characteristics such as strength or wear resistance. 

4

Fillister Head: One with a rounded top, cylindrical sides, and flat bearing surface. 

Fillet/Fillet Radius: Concave junction at two intersecting surfaces of a fastener. Often 

used to describe the junction between the head and the shank of a threaded fastener 

(under head fillet). 

Fit: The resulting range of tightness, which may occur due to the application of tolerances 

and allowances in the mating joint members. 

Flange: A disc shaped rim formed on the end of a cylindrical object, often related to the 

head geometry of a fastener or the collar of a lock bolt. 

Flank Angle: See thread profile 

Flat Head: One with a level surface and a conical bearing surface; available in various 

nominal head angles. 

Flat Trim Head: A flat head with a smaller diameter and lower head height than a 

standard flat head. TrimFit® fasteners have this type of head. 

Flat Undercut Head: A standard flat head undercut to 70% of the basic head height. 

Follower Spring (with reference to Avdel® Speed Fastening System): A spring placed on 

a mandrel after the fasteners have been loaded. The follower spring assists in moving the 

fasteners through the nosepiece as the last few rivets are placed. 

Free Standing: A stand-alone installation system, which includes a frame. 

5

Full Collar: A standard full height lock bolt collar. 

Full Diameter Body/Full-Size Body: an unthreaded portion of a fastener whose diameter 

is within the dimensional limits of the threaded portion. 

Gap Closing: See clench. 

Gimlet Point: A threaded cone point usually with a point angle of 45º to 50º. It is used on 

many thread-forming screws. 

Grip: The thickness of all of the materials or parts that the fastener is designed to secure 

when assembled. 

Grip Range: The minimum and maximum thickness of all of the materials or parts that the 

fastener is designed to secure when assembled. 

Half Collar: A reduced height lock bolt collar used to minimize collar protrusion. Note: will 

reduce tensile performance. Compare to full collar. 

Hardening: Changing the strength characteristics of a fastener through heat treatment or 

work hardening. See case hardening, induction hardening, and through hardening 

Header Point: A chamfered point produced on the blank during the heading operation, 

before the threads are rolled. 

Head form/Head Style: The characteristics of the fastener head. Head styles include 

large flange, low profile, countersunk, pan, truss, hex, hex flange and socket head. 

6

Head Height: 

for a flat surface: the overall distance, measured parallel to the fastener axis, from the 

top to the bearing surface. 

for a conical bearing surface: the overall distance, measured in a line parallel to the 

fastener axis, from the top to the intersection of the bearing surface with the extended 

major diameter cylinder on a threaded fastener, or with the shank on an unthreaded 

fastener. 

for flat and oval undercut heads: the distance measured to the intersection of the 

bearing surface with the undercut. For oval heads and undercut oval heads, the overall 

distance is referred to as total head height. 

Helix Angle: The angle between the helix of the thread and a line perpendicular to the 

axis of the screw. 

Hexagon Head/Hex Head: One with a flat or indented top surface, six flat sides, and a flat 

bearing surface. 

Hexagon Washer Head/Hex Washer Head: A hex head with an integral, formed washer 

at the base of the hexagon. The washer diameter may be equal to or greater than the 

width across the corners. 

Hexagon Flange Head/Hex Flange Head: Hex head with a integral circular collar 

connected to the base of the hexagon by a conic section. Normally, the flanged diameter 

is larger than the width across the corners of the hexagon. 

Hole Size: The size of the opening into which the fastener will be inserted. 

Hydra-pneumatic (also hydro-pneumatic): The use of an air over oil intensification 

system to generate pressure for the placement of rivets. 

7

Induction Hardened: A heat-treated fastener that has undergone a selective hardening 

process, using induction coils, to further strengthen a part of the fastener. 

Jaws: 

1. The part of the nosepiece that opens to permit a fastener to protrude for placement. 

2. The part of the tool that grips the mandrel to expand the rivet. 

Knurls: Ridges on the exterior surface of a fastener that provide increased torque-to-turn 

resistance or other performance enhancement. Also called splines. 

Lead-in Chamfer: The tapered end of a fastener which helps ease insertion. 

Lead Thread: The thread length from where it starts to where it becomes full size. This 

distance on machine screws is usually one-half the screw diameter. 

Left-Hand Thread: Opposite of standard threads (right-hand threads), receding threads 

wind in a counter-clockwise direction when the fastener is viewed axially. All left-hand 

threads are designated LH. 

Length of Engagement: The length of full-sized fastener threads that engage in the nut 

material. The length of the lead thread is not counted in the length of engagement, since 

its reduced size minimizes any performance benefits. The length of engagement is usually 

expressed in relationship to the nominal diameter of the screw (e.g. 2 to 2-1/2 diameters of 

engagement). 

Load Flank: For threaded fasteners, the top portion of each thread which applied the 

preload or load pressure to the mating threads. 

Lock bolt: A two-piece fastener designed to provide high strength and vibration 

resistance. Access is required to both sides of the joint and installation is achieved by 

swaging the collar onto the locking grooves of the pin. 

8

Locked Stem: The stem, or mandrel, is locked in the fastener shell during placement. 

Eliminates the risk of the stem vibrating loose from the rivet head. 

Locking Grooves 

A set of grooves on the pin of a lock bolt fastener, into which the collar is swaged. 

Magazine-Fed (with reference to Avdel® Speed Fastening System): Refers to a number 

of speed fasteners, which may be handled and loaded into an installation tool as a single 

item. 

Shown in photograph, left to right: pre-loaded mandrel; empty mandrel; pod. 

Major diameter: The outside or largest diameter of an outside thread. 

Mandrel: 

A specially processed steel rod onto which the magazine of speed fasteners is loaded. 

Also the stem/nail section of a break stem fastener. 

Maximum Grip: The largest recommended thickness of joint material for a fastener. 

9

Mechanically Locked Stem: The stem or mandrel is locked in the fastener shell during 

placement via a mechanical system. This eliminates the risk of the stem vibrating loose 

from the fastener head and the problems associated with loose stems. 

Minor diameter: The inside or smallest diameter of an external thread. 

Nail Point: A sharp, pyramidal end generally having a point angle of 30º to 45º, which is 

produced by a pinching operation. It is designed for piercing wood and other resilient 

materials. 

Nominal diameter: The major diameter of a screw or, in TRI-ROUNDULAR fasteners, 

the “C" dimensions. This designation is used for the purpose of general identification. 

Nose: The working mechanism that grips the fastener to set it. 

Nose Assembly/Nose Equipment: A kit of parts fitted to an installation tool. The nose 

assembly must be matched to a specific fastener as it influences its installation and 

performance. 

Nose Tip: The interchangeable front most part of a nose assembly. The nose tip must be 

matched to a specific fastener as it influences its installation and performance. 

Nut Thickness: The overall distance from the top of the nut to the bearing surface, 

measured parallel to the axis of the nut. 

Oval Head: One with a rounded top surface and a conical bearing surface, with a head 

angle of nominally 82º (90º for metric). 

Oval Point: A radius point; sometimes referred to as a round point. 

10

Pan Head: One with a flat bearing surface and a flat top surface rounding into a cylindrical 

side surface. On recessed pan heads, the top surface is semi-elliptical, rounding into a 

cylindrical side surface. 

Passivation/Passivated: A process to remove contaminants from the surface of stainless 

steel. Also a name for the chromatic process applied to some metallic finishes to enhance 

corrosion resistance. 

Peak Drive Torque: Amount of force required to pull the members of a joint together; the 

point at which clamp begins to generate. 

Peel-Type Tail: A rivet body which is designed to split open on the blind side of the joint 

during the installation process to provide a large blind side bearing area in soft materials. 

Pilot point: A cylindrical point with a diameter somewhat smaller than the shank diameter, 

which aids alignment and starting during installation. Also called a dog point. 

Pitch Cylinder: For threaded fasteners, a cylinder parallel to the fastener axis whose 

diameter is equidistant between the major and minor diameters. 

Pitch Diameter: On straight threads, the diameter of the pitch cylinder. 

PLC (Programmable Logic Controller): Typically used to control the sequence of events 

required to step a machine through its functions. 

Pod: A magazine of speed fasteners contained within a strip of bonded paper tape. 

Point: For threaded fasteners, a conical or cylindrical configuration at the end of the shank 

on a headed fastener, or each end of a headless fastener. Point types include pilot, gimlet, 

and nail. 

11

Point Angle: The slope of the end configuration. 

Point Diameter: The distance measured at the extreme end of the fastener. It may 

sometimes be designated as "chamfer diameter" or "pilot diameter" on respective point 

types. 

Point Length: The distance measured parallel to the axis of the fastener from the extreme 

end. It may sometimes be designated as "chamfer length" or "pilot length" on respective 

point types. 

Proof load: Amount of load a fastener can withstand before permanent plastic 

deformation will occur. 

Pulling Force: The axial force the tool applies during the installation of rivets. 

Pull Grooves: A set of grooves on a rivet or lock bolt stem to enhance the grip of the tool 

when pulling. 

Pull-Out: The minimum force required to laterally remove a fastener from the parent 

material. 

Push-Out: The minimum force required to displace a threaded insert through and out of 

the parent material. 

12

Radial Stress (hoop stress): Forces that propagate from the fastener towards the 

outside diameter of the joint. 

Recess Depth: The distance measured parallel to the fastener axis from the head 

surface/maximum diameter of the drive system recess to the bottom of that recess. 

Reference Dimension: A measurement without tolerance used for informational purposes 

only. 

Repetition Riveter: Any Speed Fastening riveting system. 

Right Hand Thread: Standard thread design; winds clockwise in a receding direction. 

Rockwell Hardness Test: Test designed to measure the hardness of the fastener, based 

on an alphanumeric scale. The higher the number, the harder the fastener. Rockwell tests 

are utilized to test for decarburization and carburization and to determine the amount of 

resistance to permanent deformation during the testing procedure. They also ensure that 

heat treating was performed to specification. 

Root: The base of the V thread. This is the weakest point on a threaded fastener because 

it has the smallest cross-sectional area. 

Round Head: One with a semi-elliptical top surface and a flat bearing surface. This term is 

also used to describe a fastener head designed without a driving surface or recess. 

Round Washer Head: A round head with an integral washer at its base. 

13

Run out Thread: The thread section that is between the last scratch of thread and the 

fillet or body. 

Sems: Fastener with captivated washer or other secondary element. 

Screw: An externally threaded fastener that does not require a nut to secure the fastened 

joint. 

Seam: A narrow, non-crystalline discontinuity, which is usually inherent on the raw 

material. Seams are usually straight or smooth curved line-discontinuities running parallel 

to the product axis. 

Shank: The portion of a fastener under the head. 

Shear: Force that tends to divide an object along a plane parallel to the opposing 

stresses. Usually measured in lbf/in 2 , psi, MPa or N/m 2 

Shear Strength: Resistance to transverse loading. Usually defined as a force in Newton’s 

(N) or pounds (lb). 

Socket Head: One with a flat chamfered top surface with a smooth or knurled side 

surface, and a flat bearing surface. A hexagon or spline (formerly known as “fluted”) 

socket is formed in the center of the top surface. 

14

Soft set: Mechanical action of pulling the rivet tight to the nose piece prior to riveting. 

Speed Fastening System: A speed fastening installation tool into which a magazine of 

fasteners is loaded. This system facilitates very rapid installation rates. 

Splines: Ridges on the exterior surface of a fastener that provide increased torque-to-turn 

resistance or other performance enhancement. Also called knurls. 

Split-tail: See peel-type tail 

Stem: The part of a break stem fastener that is retained within the body. Also known as 

the mandrel. 

Stem Retention: The force required to separate the stem from the body of an uninstalled 

break stem fastener. 

Swaging: The action of permanently radially-deforming the collar of a lock bolt onto the 

pin. 

Tail jaws: In Speed Fastening tools, the part that grips the mandrel to pull it through the 

rivet. 

15

Tensile Strength: The amount of longitudal load/elongation a fastener can withstand 

without failure of the fastener or joint. Measured in lbf/in 2 , psi, MPa or N/m 2 

Tensile Strength Area: Those used to calculate the tensile strength of an externally 

threaded fastener, so that the fastener strength is consistent with the material strength. It 

corrects for the notch and helix effects of the threads, and is a function of the pitch and 

minor diameters. 

Thermoplastic: Polymers characterized by their ductility (fillers may be added to increase 

stiffness or other characteristics). Thermoplastics can be re-melted and reformed several 

times without degrading the material. 

Thermo set: Polymer characterized by extreme stiffness; the initial molding process 

causes a chemical reaction that "cures" the material, so the resin cannot be reprocessed. 

Thread Engagement: The amount of thread tooth that is filled by the application material. 

This measurement is usually expressed as a percentage and is used to determine optimal 

hole size. 

Threaded Fastener: Any screw/bolt (external threads), nut (internal threads), or 

combination with machine/standard or engineered threads. Does not include custom 

stamped or formed components with internal and/or external threads. 

Threaded Insert: A fastener that provides load-bearing threads in materials too thin or 

brittle to accept regular standard fasteners. 

Thread Profile/Thread Angle: The angle between the flank of the thread and a line 

perpendicular to the screw axis. 

Through Hardened: Heat treated fastener with uniform hardness from the surface to the 

core. 

TIR Approved: A European standard used by the Vehicle Inspectorate — Executive 

Agency. It is an approved bonding scheme enabling goods vehicles to travel between 

16

countries approved by their respective Customs Authorities. The bonding scheme ensures 

that all load compartments, once sealed (using TIR approved fasteners), cannot have 

anything added or taken from them without breaking seals or leaving obvious traces of 

structural damage. 

Torque-To-Turn: Typically the torque required to rotate an installed fastener in the 

application material. Usually used in reference to threaded inserts and clinch fasteners; 

may also be called Unsupported Torque Resistance. 

Torsion: Twisting force applied to a fastener. 

Truss Head: One with a rounded top surface and a flat bearing surface; the diameter of 

the truss head is larger in comparison to the fastener size than the diameter of the 

corresponding round head. 

Ultimate Tensile Stress: The peak longitudal load that can be applied to a fastener, 

divided by the original cross sectional area. Usually measured in lbf/in 2 , psi, MPa or N/m 2 . 

Ultimate Torque: The amount of force at which a threaded fastener begins to strip or 

otherwise fail in a joint, or strip the threads of an insert or nut. For threaded inserts and 

clinch fasteners, it may also be referred to as Supported Torque. 

UNC (Unified Coarse Thread): An inch thread form (60º) standard defined by 

ANSI/ASME. Usually used in reference to machine screws. ASMEB1.1 and British 

Standard BS 1580 cover it. 

UNF (Unified Fine Thread): An imperial thread form standard defined by ANSI/ASME. 

Usually used in reference to machine screws. ASME B1.1 and British Standard BS1580 

cover it. 

Washer Face: A circular boss on the bearing surface of a cap screw or nut. The only bolt 

that has a washer face is the heavy hex structural bolt. 

Washer Head: One with a circular collar to provide a large flat bearing surface (see hex 

washer head and round washer head for examples). 

Wedge Tensile Test: Procedure that induces a bending stress under the head of a bolt, 

screw or nut, used to demonstrate ductility and the integrity of the head-to-shank junction. 

17

Work Hardening/Cold Working: An increase in metal hardness which is the result of 

forming processes such as elongation, rolling, heading, etc. This is particularly 

pronounced in steels, copper and aluminum alloys. 

Work piece: The parts to be riveted. 

Yield Strength: Measures the resistance of material to plastic deformation. When a 

fastener is stretched, yield strength is the point where the fastener will not return to its 

original length following testing. It is measured in terms of pounds per square inch (psi) or 

megapascals (MPa). Yield strength is often determined by the offset method illustrated to 

the left. 

18

Cap Screws & Bolts 

External Thread Dimensions 

Purchase Partners EXTERNAL THREADS - CLASS 2A ASME B1.1 

Nominal Size 

Series 

Designation 

Allowance 

Major Diameter 

Pitch Diameter 

Max Min Max Min Tolerance 

4-40 UNC 0.0008 0.1112 0.1061 0.0950 0.0925 0.0025 

6-32 UNC 0.0008 0.1372 0.1312 0.1169 0.1141 0.0028 

8-32 UNC 0.0009 0.1631 0.1571 0.1428 0.1399 0.0029 

10-24 UNC 0.0010 0.1890 0.1818 0.1619 0.1586 0.0033 

10-32 UNF 0.0009 0.1891 0.1831 0.1688 0.1658 0.0030 

1/4-20 UNC 0.0011 0.2489 0.2408 0.2164 0.2127 0.0037 

1/4-28 UNF 0.0010 0.2490 0.2425 0.2258 0.2225 0.0033 

5/16-18 UNC 0.0012 0.3113 0.3026 0.2752 0.2712 0.0040 

5/16-24 UNF 0.0011 0.3114 0.3042 0.2843 0.2806 0.0037 

3/8-16 UNC 0.0013 0.3737 0.3643 0.3331 0.3287 0.0044 

3/8-24 UNF 0.0011 0.3739 0.3667 0.3468 0.3430 0.0038 

7/16-14 UNC 0.0014 0.4361 0.4258 0.3897 0.3850 0.0047 

7/16-20 UNF 0.0013 0.4362 0.4281 0.4037 0.3995 0.0042 

1/2-13 UNC 0.0015 0.4985 0.4876 0.4485 0.4435 0.0050 

1/2-20 UNF 0.0013 0.4987 0.4906 0.4662 0.4619 0.0043 

9/16-12 UNC 0.0016 0.5609 0.5495 0.5068 0.5016 0.0052 

9/16-18 UNF 0.0014 0.5611 0.5524 0.5250 0.5205 0.0045 

5/8-11 UNC 0.0016 0.6234 0.6113 0.5644 0.5589 0.0055 

5/8-18 UNF 0.0014 0.6236 0.6149 0.5875 0.5828 0.0047 

3/4-10 UNC 0.0018 0.7482 0.7353 0.6832 0.6773 0.0059 

3/4-16 UNF 0.0015 0.7485 0.7391 0.7079 0.7029 0.0050 

7/8-9 UNC 0.0019 0.8731 0.8592 0.8009 0.7946 0.0063 

7/8-14 UNF 0.0016 0.8734 0.8631 0.8270 0.8216 0.0054 

1-8 UNC 0.0020 0.9980 0.9830 0.9168 0.9100 0.0068 

1-14 UNS 0.0017 0.9983 0.9880 0.9519 0.9463 0.0056 

1 1/8-7 UNC 0.0022 1.1228 1.1064 1.0300 1.0228 0.0072 

1 1/8-12 UNF 0.0018 1.1232 1.1118 1.0691 1.0631 0.0060 

1 1/4-7 UNC 0.0022 1.2478 1.2314 1.1550 1.1476 0.0074 

1 1/4-12 UNF 0.0018 1.2482 1.2368 1.1941 1.1879 0.0062 

1 3/8-6 UNC 0.0024 1.3726 1.3544 1.2643 1.2563 0.0080 

1 1/2-6 UNC 0.0024 1.4976 1.4794 1.3893 1.3812 0.0081 

1 3/4-5 UNC 0.0027 1.7473 1.7268 1.6174 1.6085 0.0089 

2-4.5 UNC 0.0029 1.9971 1.9751 1.8528 1.8433 0.0095 

2 1/2-4 UNC 0.0031 2.4969 2.4731 2.3345 2.3241 0.0104 

2 3/4-4 UNC 0.0032 2.7468 2.7230 2.5844 2.5739 0.0105 

3-4 UNC 0.0032 2.9968 2.9730 2.8344 2.8237 0.0107

Thread Dimensions 

Class 3A 

Purchase Partners EXTERNAL THREADS -CLASS 3A 

ANSI B1.1 

Screw Size 

Major Diameter Pitch Diameter Minor Diameter 

Basic Max Min Basic Max Min Max 

0-80 .0600 .0600 .0568 .0519 .0519 .0506 .0447 

1-72 .0730 .0730 .0695 .0640 .0640 .0626 .0560 

2-56 .0860 .0860 .0819 .0744 .0744 .0728 .0641 

3-48 .0990 .0990 .0945 .0855 .0855 .0838 .0734 

4-40 .1120 .1120 .1069 .0958 .0958 .0930 .0813 

4-48 .1120 .1120 .1075 .0985 .0985 .0967 .0864 

5-40 .1250 .1250 .1199 .1088 .1088 .1069 .0943 

6-32 .1380 .1380 .1320 .1177 .1177 .1156 .0997 

6-40 .1380 .1380 .1329 .1218 .1218 .1198 .1073 

8-32 .1640 .1640 .1580 .1437 .1437 .1415 .1257 

8-36 .1640 .1640 .1585 .1460 .1460 .1439 .1299 

10-24 .1900 .1900 .1828 .1629 .1629 .1604 .1389 

10-32 .1900 .1900 .1840 .1697 .1697 .1674 .1517 

1/4-20 .2500 .2500 .2419 .2175 .2175 .2147 .1887 

1/4-28 .2500 .2500 .2435 .2268 .2268 .2243 .2062 

5/16-18 .3125 .3125 .3038 .2764 .2764 .2734 .2443 

5/16-24 .3125 .3125 .3053 .2854 .2854 .2827 .2614 

3/8-16 .3750 .3750 .3656 .3344 .3344 .3311 .2983 

3/8-24 .3750 .3750 .3678 .3479 .3479 .3450 .3239 

7/16-14 .4375 .4375 .4272 .3911 .3911 .3876 .3499 

7/16-20 .4375 .4375 .4294 .4050 .4050 .4019 .3762 

1/2-13 .5000 .5000 .4891 .4500 .4500 .4463 .4056 

1/2-20 .5000 .5000 .4919 .4675 .4675 .4643 .4387 

5/8-11 .6250 .6250 .6129 .5660 .5660 .5619 .5135 

5/8-18 .6250 .6250 .6163 .5889 .5889 .5854 .5568 

3/4-10 .7500 .7500 .7371 .6850 .6850 .6806 .6273 

7/8-9 .8750 .8750 .8611 .8028 .8028 .7981 .7387 

1-8 1.0000 1.0000 .9850 .9188 .9188 .9137 .8466 

*Class 3A threads over 1" diameter screws are Class 2A threads. 

* 1 1/4-7 1.2500 1.2478 1.2314 1.1572 1.1550 1.1476 1.0725 

* 1 1/2-6 1.5000 1.4976 1.4794 1.3917 1.3893 1.3812 1.2931

Class 2B 

Internal Threads 

Min. 

Major 

Diameter 

Pitch 

Line 

Minor 

Diameter 

Axis of internal thread 

Purchase Partners INTERNAL THREADS - CLASS 2B ASME B1.1 

Nominal Size 

& Threads 

per Inch 

Series 

Designation 

Allowance 

Minor Diameter 


Major 

Diameter 

Min Max Min Max Tolerance Min 

0-80 UNF 0.0005 0.0465 0.0514 0.0519 0.0542 0.0023 0.0600 

1-64 UNC 0.0006 0.0561 0.0623 0.0629 0.0655 0.0026 0.0730 

1-72 UNF 0.0006 0.0580 0.0635 0.0640 0.0665 0.0025 0.0730 

2-56 UNC 0.0006 0.0667 0.0737 0.0744 0.0772 0.0028 0.0860 

3-48 UNC 0.0007 0.0764 0.0845 0.0855 0.0885 0.0030 0.0990 

4-40 UNC 0.0008 0.0849 0.0939 0.0958 0.0991 0.0033 0.1120 

4-48 UNF 0.0007 0.0894 0.0968 0.0985 0.1016 0.0031 0.1120 

5-40 UNC 0.0008 0.0979 0.1062 0.1088 0.1121 0.0033 0.1250 

6-32 UNC 0.0008 0.104 0.114 0.1177 0.1214 0.0037 0.1380 

8-32 UNC 0.0009 0.130 0.139 0.1437 0.1475 0.0038 0.1640 

10-24 UNC 0.0010 0.145 0.156 0.1629 0.1672 0.0043 0.1900 

10-32 UNF 0.0009 0.156 0.164 0.1697 0.1736 0.0039 0.1900 

12-24 UNC 0.0010 0.171 0.181 0.1889 0.1933 0.0044 0.2160 

1/4-20 UNC 0.0011 0.196 0.207 0.2175 0.2224 0.0049 0.2500 

1/4-28 UNF 0.0010 0.211 0.220 0.2268 0.2311 0.0043 0.2500 

5/16-18 UNC 0.0012 0.252 0.265 0.2764 0.2817 0.0053 0.3125 

5/16-24 UNF 0.0011 0.267 0.277 0.2854 0.2902 0.0048 0.3125 

3/8-16 UNC 0.0013 0.307 0.321 0.3344 0.3401 0.0057 0.3750 

3/8-24 UNF 0.0011 0.330 0.340 0.3479 0.3528 0.0049 0.3750 

7/16-14 UNC 0.0014 0.360 0.376 0.3911 0.3972 0.0061 0.4375 

7/16-20 UNF 0.0013 0.383 0.395 0.4050 0.4104 0.0054 0.4375 

1/2-13 UNC 0.0015 0.417 0.434 0.4500 0.4565 0.0065 0.5000 

1/2-20 UNF 0.0013 0.446 0.457 0.4675 0.4731 0.0056 0.5000 

9/16-12 UNC 0.0016 0.472 0.490 0.5084 0.5152 0.0068 0.5625 

9/16-18 UNF 0.0014 0.502 0.515 0.5264 0.5323 0.0059 0.5625 

5/8-11 UNC 0.0016 0.527 0.546 0.5660 0.5732 0.0072 0.6250 

5/8-18 UNF 0.0014 0.565 0.578 0.5889 0.5949 0.0060 0.6250 

3/4-10 UNC 0.0018 0.642 0.663 0.6850 0.6927 0.0077 0.7500 

3/4-16 UNF 0.0015 0.682 0.696 0.7094 0.7159 0.0065 0.7500 

7/8-9 UNC 0.0019 0.755 0.778 0.8028 0.8110 0.0082 0.8750 

7/8-14 UNF 0.0016 0.798 0.814 0.8286 0.8356 0.0070 0.8750

Nuts 

Internal Threads 

Class 2B 

Min. 

Major 

Diameter 

Pitch 

Line 

Minor 

Diameter 

Axis of internal thread 

INTERNAL THREADS -CLASS 2B (CONTINUED) ASME B1.1 

Nominal Size 

& Threads 

per Inch 

Series 

Designation 

Allowance 

Minor Diameter 


Major 

Diameter 

Min Max Min Max Tolerance Min 

1-8 UNC 0.0020 0.865 0.890 0.9188 0.9276 0.0088 1.0000 

1-14 UNS 0.0017 0.923 0.938 0.9536 0.9609 0.0073 1.0000 

1 1/8-7 UNC 0.0022 0.970 0.998 1.0322 1.0416 0.0094 1.1250 

1 1/8-12 UNF 0.0018 1.035 1.053 1.0709 1.0787 0.0078 1.1250 

1 1/4-7 UNC 0.0022 1.095 1.123 1.1572 1.1668 0.0096 1.2500 

1 1/4-12 UNF 0,0018 1.160 1.178 1.1959 1.2039 0.0080 1.2500 

1 3/8-6 UNC 0.0024 1.195 1.225 1.2667 1.2771 0.0104 1.3750 

1 3/8-12 UNF 0.0019 1.285 1.303 1.3209 1.3291 0.0082 1.3750 

1 1/2-6 UNC 0.0024 1.320 1.350 1.3917 1.4022 0.0105 1.5000 

1 1/2-12 UNF 0.0019 1.410 1.428 1.4459 1.4542 0.0083 1.5000 

1 5/8-6 UN 0.0025 1.445 1.475 1.5167 1.5274 0.0107 1.6250 

1 5/8-8 UN 0.0022 1.490 1.515 1.5438 1.5535 0.0097 1.6250 

1 3/4-5 UNC 0.0027 1.534 1.568 1.6201 1.6317 0.0116 1.7500 

1 3/4-12 UN 0.0018 1.660 1.678 1.6959 1.7037 0.0078 1.7500 

2-4.5 UNC 0.0029 1.759 1.795 1.8557 1.8681 0.0124 2.0000 

2-12 UN 0.0018 1.910 1.928 1.9459 1.9538 0.0079 2.0000 

2 1/4-4.5 UNC 0.0029 2.009 2.045 2.1057 2.1183 0.0126 2.2500 

2 1/4-12 UN 0.0018 2.160 2.178 2.1959 2.2038 0.0079 2.2500 

2 1/2-4 UNC 0.0031 2.229 2.267 2.3376 2.3511 0.0135 2.5000 

2 1/2-12 UN 0.0019 2.410 2.428 2.4459 2.4540 0.0081 2.5000 

2 3/4-4 UNC 0.0032 2.479 2.517 2.5876 2.6013 0.0137 2.7500 

2 3/4-12 UN 0.0019 2.660 2.678 2.6959 2.7040 0.0081 2.7500 

3-4 UNC 0.0032 2.729 2.767 2.8376 2.8515 0.0139 3.0000 

3-12 UN 0.0019 2.910 2.928 2.9459 2.9541 0.0082 3.0000 

3 1/4-4 UNC 0.0033 2.979 3.017 3.0876 3.1017 0.0141 3.2500 

3 1/2-4 UNC 0.0033 3.229 3.267 3.3376 3.3519 0.0143 3.5000 

3 3/4-4 UNC 0.0034 3.479 3.517 3.5876 3.6021 0.0145 3.7500 

4-4 UNC 0.0034 3.729 3.767 3.8376 3.8523 0.0147 4.0000

Assembly Parts - Purchase Partners

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