chapter 1 hexagon head bolts
TRANSCRIPT
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1/7ED. 2001-A
ETE ST G
R
AGRATI GROUP
SPECIFICATIONS AND REFERENCE STANDARDS
HEXAGON HEAD BOLTS
Material
General requirements
Tolerances
Environmentalprescriptions
International Std.
International Std.
Steel
ISO 8992
4 5 6
e f g hISO 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 coveredin ISO 6157-1 and ISO 6157-3.
VDA 232-101 or other applicable standard
ISO 3269 ISO 16426 or other applicable standard
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This chapter shows special hexagonal head bolts andscrews. The production range of the Agrati Group isshown in the corresponding table, while, with referenceto 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 thefreedom to assembly the bolt or screw according toanyones own requirement.Reference standards and
requirements are indicated at the foot of the page.
Captive washer version
StandardsPositions
Grades
TABLE DESCRIPTION
Hexagon head shapeUnderhead shapeShaft shape
DESCRIPTION
Screw endsCaptive washer version
TESTG
TABLE
ER
Thread
MechanicalProperties
Finish
Surfacediscontinuities
Acceptability
Tolerance
Class
Standards
Standards
Standards
Standards
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8
10
1216
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
ED. 2001-A
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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 1.51
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 4613 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.
1
PRODUCTION RANGE
Pitch
Acrossflats
S
Thread
Lengths
M4 M5 M6 M7 M8 M10 M12 M14 M16 M18 M20 M22 M24 M27 M30
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HEXAGON HEAD BOLTS
TABLE TE : HEAD SHAPE
ED. 2001-A
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
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HEXAGON HEAD BOLTS
TABLE ST : UNDERHEAD SHAPE
ED. 2001-A
ST5 : Countersunk
ST3 : With washer face and gorge
ST1 : With washer face
ST4 : Without washer face, with gorge
ST2 : Without washer face
ST6 : Without washer face, with annular undercut
ST7 : Indented type A ST8 : Indented type B
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HEXAGON HEAD BOLTS
TABLE G : SHAFT SHAPE
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AGRATI GROUP1
G1 : Threaded up to the head
G3 : Partially threaded
G5 : Partially threaded
G7 : Partially threaded with knurling
G2 : Partially threaded
G6 : Partially threaded
with two shaft diametersG4 : Partially threaded
with shaft ~ pitch diameter
with undercut shaft diameter with large body diameter
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HEXAGON HEAD BOLTS
TABLE E : SCREW ENDS
ED. 2001-A
E1 : Chamfered E2 : Long chamfered
E3 : Dog 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
E4 : Pilot point with cone point
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HEXAGON HEAD BOLTS
TABLE R : ASSEMBLED WASHERS
ED. 2001-A
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