hexagon head bolts

10
HEXAGON HEAD BOLTS
This chapter shows special hexagonal head bolts and
screws. The production range of the Agrati Group is
shown in the corresponding table, while, with reference
to the typologies, the preferred choice of presentation
has been to introduce separately the different
characteristics of the products (head, bearing surface,
shaft, end, possible assembled washer) leaving the
freedom to “assembly” the bolt or screw according to
anyone’s own requirement.Reference standards and
requirements are indicated at the foot of the page.
TE ST G
E
R
Captive washer version
TABLE
DESCRIPTION
TABLE
DESCRIPTION
TE
ST
G
Hexagon head shape
Underhead shape
Shaft shape
E
R
Screw ends
Captive washer version
SPECIFICATIONS AND REFERENCE STANDARDS
Material
General requirements
Thread
Mechanical
Properties
Tolerances
Finish
Surface
discontinuities
Environmental
prescriptions
Acceptability
Tolerance
International Std.
Grades
Positions
Standards
Class
Standards
International Std.
Standards
Standards
Standards
Steel
ISO 8992
4 5 6
e f g h
ISO 261 ISO 965-2 ISO 965-3 or upon request.
4.8 6.8 8.8 10.9 12.9 or upon request.
ISO 898-1 or other applicable standard
ISO 4759-1
ISO 4042 or other applicable standard
Electroplated coatings excluded for class 12.9
Limits for surface discontinuities are covered
in ISO 6157-1 and ISO 6157-3.
VDA 232-101 or other applicable standard
ISO 3269
ISO 16426 or other applicable standard
1
AGRATI
GROUP
ED. 2001-A

11
PRODUCTION RANGE
Thread
Pitch
Across
flats
Lengths
S
8
10
12
16
20
25
30
35
40
45
50
55
60
70
80
90
100
110
120
130
140
150
160
180
200
220
240
260
280
300
M4 M5 M6 M7 M8 M10 M12 M14 M16 M18 M20 M22 M24 M27 M30
0.7 0.8 1 1 1.25 1.5 1.75 2 2 2.5 2.5 2.5 3 3 3.5
1 1.25 1.5 1.5 1.5 2 2 1.5 2 2 2
1 1.25 1.5 1.5
1
7 8 8 11 10 13 17 21 22 27 27 32 36 41 46
10 12 14 18 22 24 30 30 34 41 46
13 15 19 24 27 32 36
16 22 34
17
Production range between the heavy stepped lines.
Completed threaded screws may be produced up to the maximum limit defined by the dashed stepped line.
Values of S according to ISO 272 normal series printed in bold.
Values of S for heavy series printed in italic.
AGRATI
GROUP
ED. 2001-A
1

12
HEXAGON HEAD BOLTS
TABLE TE : HEAD SHAPE
TE1 : Hexagonal
TE2 : With radial impressions
TE3 : Slotted
TE4 : With circular embossing
TE5 : With double chamfer
TE6 : Without chamfer
TE7 : Pan with cross recess
TE8 : Pan
1
AGRATI
GROUP
ED. 2001-A

HEXAGON HEAD BOLTS
13
TABLE ST : UNDERHEAD SHAPE
ST1 : With washer face
ST2 : Without washer face
ST3 : With washer face and gorge
ST4 : Without washer face, with gorge
ST5 : Countersunk
ST6 : Without washer face, with annular undercut
ST7 : Indented type A
ST8 : Indented type B
AGRATI
GROUP
ED. 2001-A
1

14
HEXAGON HEAD BOLTS
TABLE G : SHAFT SHAPE
G1 : Threaded up to the head
G2 : Partially threaded
G3 : Partially threaded
with shaft ~ pitch diameter
G4 : Partially threaded
with two shaft diameters
G5 : Partially threaded
G6 : Partially threaded
with undercut shaft diameter with large body diameter
G7 : Partially threaded with knurling
1
AGRATI
GROUP
ED. 2001-A

HEXAGON HEAD BOLTS
15
TABLE E : SCREW ENDS
E1 : Chamfered
E2 : Long chamfered
E3 : Dog point
E4 : Pilot point with cone point
E5 : Truncated cone point
E6 : Pilot point with truncated point
E7 : Pilot ogival point
E8 : Ogival point
E9 : Pilot square point
E10 : Scrape point type A
E11 : Scrape point type B
E12 : Scrape point type C
E13 : Scrape point type D
E14 : Scrape point type E
E15 : Scrape point type F
AGRATI
GROUP
ED. 2001-A
1

16
HEXAGON HEAD BOLTS
TABLE R : ASSEMBLED WASHERS
R1 : Plain R2 : Plain large or extra large R3 : Thick plain
R4 : Plain with projections R5 : Curved spring R6 : Spring crinkled
R7 : Serrated lock R8 : Conical spring R9 : Curved spring plus plain
R10 : Spring crinkled plus plain R11 : Serrated lock plus plain R12 : Conical spring plus plain
R13 : Shaped plain type A R14 : Shaped plain type B R15: Plain plus plain large
1
AGRATI
GROUP
ED. 2001-A