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(Non-preferred) dimensions in parentheses.

Unit:mm

High-Strength Structural Bolting Assemblies For Preloading-Part 3:System HR-Hexagon Bolt With Large Width Across Flats

GB /T 32076.3 - 2015

Display drawing:

国标GB /T32076.3 - 2015 GB32076.3 32076.3G High-Strength Structural Bolting Assemblies For Preloading-Part 3:System HR-Hexagon Bolt With Large Width Across Flats
Nominal Length L Tips:seclect Nominal Length L and get Thread length.
Thread Size
d
M12 (M14) M16 (M18) M20 (M22) M24 (M27) M30 M36
P Pitch
b L≤125
125＜L≤200
c max
min
da max
ds max
min
dw min
e min
k Nominal Size
max
min
k1 min
r min
s max
min
1.75 2 2 2.5 2.5 2.5 3 3 3.5 4
30 34 38 42 46 50 54 60 66 78
- 40 44 48 52 56 60 66 72 84
0.8 0.8 0.8 0.8 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 0.4 0.4
15.2 17.2 19.2 21.7 24.4 26.4 28.4 32.4 35.4 42.4
12.7 14.7 16.7 18.7 20.84 22.84 24.84 27.84 30.84 37
11.3 13.3 15.3 17.3 19.16 21.16 23.16 26.16 29.16 35
20.1 22.0 24.9 27.7 29.5 33.3 38.0 42.8 46.6 55.9
23.91 26.17 29.56 32.95 35.03 39.55 45.2 50.85 55.37 66.44
7.5 8.8 10 11.5 12.5 14 15 17 18.7 22.5
7.95 9.25 10.75 12.4 13.4 14.9 15.9 17.9 19.75 23.55
7.05 8.35 9.25 10.6 11.6 13.1 14.1 16.1 17.65 21.45
4.90 5.85 6.50 7.42 8.10 9.2 9.9 11.3 12.4 15.0
1.2 1.2 1.2 1.5 1.5 1.5 1.5 2.0 2.0 2.0
22 24 27 30 32 36 41 46 50 60
21.16 23.16 26.16 29.16 31 35 40 45 49 58.8
Length of Thread b
- - - - - - - - - -
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