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Unit:mm

Hex Bolt For Pipe Flange Connection - Class designated

GB /T 9125.2 - 2020

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国标GB /T9125.2 - 2020 GB9125.2 9125.2GB Hex Bolt For Pipe Flange Connection - Class designated
Download CAD Model*
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 *Models with different eras.

Thread Size
d
M14 M16 M20 M24 M27 M30 M33 M36 M39 M42 M45 M48
P Pitch
b L≤125
125＜L≤200
L＞200
c max
min
da max
ds max=nominal size
Grade A min
Grade B min
dw Grade A min
Grade B min
e Grade A min
Grade B min
L1 max
k Nominal Size
Grade A max
min
Grade B max
min
k1 Grade A min
Grade B min
r min
s max=nominal size
Grade A min
Grade B min
2 2 2.5 3 3 3.5 3.5 3 3 3 3 3
34 38 46 54 60 66 / / / / / /
40 44 52 60 66 72 78 84 90 96 102 108
53 57 65 73 79 85 91 97 103 109 115 121
0.6 0.8 0.8 0.8 0.8 0.8 0.8 0.8 1 1 1 1
0.15 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.3 0.3 0.3
15.7 17.7 22.4 26.4 30.4 33.4 36.4 39.4 42.4 45.6 48.6 52.6
14 16 20 24 27 30 33 36 39 42 45 48
13.73 15.73 19.67 23.67 / / / / / / / /
13.57 15.57 19.48 23.48 26.48 29.48 32.38 35.38 38.38 41.38 44.38 47.38
19.64 22.49 28.19 33.61 / / / / / / / /
19.15 22 27.7 33.25 38 42.75 46.55 51.11 55.86 59.95 64.7 69.45
23.36 26.75 33.53 39.98 / / / / / / / /
22.78 26.17 32.95 39.55 45.2 50.85 55.37 60.79 66.44 71.3 76.95 82.6
3 3 4 4 6 6 6 6 6 8 8 10
8.8 10 12.5 15 17 18.7 21 22.5 25 26 28 30
8.98 10.18 12.715 15.215 / / / / / / / /
8.62 9.82 12.285 14.785 / / / / / / / /
9.09 10.29 12.85 15.35 17.35 19.12 21.42 22.92 25.42 26.42 28.42 30.42
8.51 9.71 12.15 14.65 16.65 18.28 20.58 22.08 24.58 25.58 27.58 29.58
6.03 6.87 8.6 10.35 / / / / / / / /
5.96 6.8 8.51 10.26 11.66 12.8 14.41 15.46 17.21 17.91 19.31 20.71
0.6 0.6 0.8 0.8 1 1 1 1 1 1.2 1.2 1.6
21 24 30 36 41 46 50 55 60 65 70 75
20.67 23.67 29.67 35.38 / / / / / / / /
20.16 23.16 29.16 35 40 45 49 53.8 58.8 63.1 68.1 73.1

Alternative history

GB /T 9125 - 2003 GB /T 9125 - 2010 GB 9125.1 - 2020
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