Specialty Screws - Interstate Screw Corporation
Specialty Screws - Interstate Screw Corporation
Specialty Screws - Interstate Screw Corporation
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20<br />
Dril-Kwick ®<br />
Self-Drilling, Self-Tapping <strong><strong>Screw</strong>s</strong><br />
Selecting The Size Of Your Dril-Kwick<br />
When selecting a Dril-Kwick for your application, consideration should be given to the screw’s<br />
diameter, the length of the drill point and the overall length of the screw.<br />
Selecting the <strong>Screw</strong> Diameter: Selecting a screw diameter will depend at a minimum on the load bearing requirements of the<br />
application, the strength of the application materials, the screw spacing pattern and the installation procedure. To aid in your<br />
selection we have provided below ultimate Dril-Kwick screw strengths and ultimate pull out loads for Dril-Kwick drill screws properly<br />
fastened into cold rolled steel of varying thicknesses. The decimal equivalents of standard gauges of sheet steel are also provided.<br />
ULTIMATE DRIL-KWICK ® SCREW STRENGTHS<br />
<strong>Screw</strong> Diameter<br />
#6 #8 #10 #12 1/4"<br />
Min. Tension (lbs.) 1125 1575 2100 2800 3850<br />
Min. Torsional Strength (in. lbs.) 25 42 61 92 150<br />
Shear Strength (x) 877 1152 1749 1870 2768<br />
ULTIMATE PULL OUT LOADS (POUNDS) FOR STANDARD PRODUCTS<br />
Gauge<br />
Size Point 20 18 16 14 12 1/8" 10 3/16" 1/4" 3/8" 1/2"<br />
6 - 20 2 331 513 633 874<br />
8 - 18 2 334 507 643 977 1204<br />
10 - 16 2 364 572 708 1015 1972<br />
10 - 16 3 1529 1903 2402<br />
12 - 14 3 1541 1990 2650 3515<br />
1/4 - 14 3 1504 1818 2413 3190<br />
1/4 - 20 3 1788 2330 2830 4420<br />
12 - 24 4+ 2643 4195 4300 4310<br />
12 - 24 5 4133 4116 4000<br />
Values ( x ) listed in pounds. Test Material: Cold rolled steel. Material Hardness: Rb 70 - 82<br />
DECIMAL EQUIVALENTS OF STANDARD GAUGES OF SHEET STEEL<br />
Number Sheet Steel Number Sheet Steel Number Sheet Steel Number Sheet Steel<br />
of Gauge (MFG. STD) of Gauge (MFG. STD) of Gauge (MFG. STD) of Gauge (MFG. STD)<br />
3 .2391 12 .1046 21 .0329 30 .0120<br />
4 .2242 13 .0897 22 .0299 31 .0105<br />
5 .2092 14 .0747 23 .0269 32 .0097<br />
6 .1943 15 .0673 24 .0239 33 .0090<br />
7 .1793 16 .0598 25 .0209 34 .0082<br />
8 .1644 17 .0538 26 .0179 35 .0075<br />
9 .1495 18 .0478 27 .0164 36 .0067<br />
10 .1345 19 .0418 28 .0149 37 .0064<br />
11 .1196 20 .0359 29 .0135 38 .0060<br />
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