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(Non-preferred) dimensions in parentheses.

Unit:mm

High-Strength Structural Bolting Assemblies For Preloading - Part 4:System HV-Hexagon Bolt With Large Width Across Flats

GB /T 32076.4 - 2015

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国标GB /T32076.4 - 2015 GB32076.4 32076.4G High-Strength Structural Bolting Assemblies For Preloading - Part 4:System HV-Hexagon Bolt With Large Width Across Flats
Thread Size
d
M12 M16 M20 (M22) M24 (M27) M30 M36
P Pitch
b Ref.
c max
min
da max
ds Nominal Size
max
min
dw min
e min
k Nominal Size
max
min
k1 min
r min
s max
min
1.75 2 2.5 2.5 3 3 3.5 4
23 28 33 34 39 41 44 52
0.6 0.6 0.8 0.8 0.8 0.8 0.8 0.8
0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4
15.2 19.2 24 26 28 32 35 41
12 16 20 22 24 27 30 36
12.7 16.7 20.84 22.84 24.84 27.84 30.84 37
11.3 15.3 19.16 21.16 23.16 26.16 29.16 35
20.1 24.9 29.5 33.3 38.0 42.8 46.6 55.9
23.91 29.56 35.03 39.55 45.2 50.85 55.37 66.44
8 10 13 14 15 17 19 23
8.45 10.75 13.9 14.9 15.9 17.9 20.05 24.05
7.55 9.25 12.1 13.1 14.1 16.1 17.95 21.95
5.28 6.47 8.47 9.17 9.87 11.27 12.56 15.36
1.2 1.2 1.5 1.5 1.5 2 2 2
22 27 32 36 41 46 50 60
21.16 26.16 31 35 40 45 49 58.8
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