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Unit:mm

Hex Bolt for Pipe Flange Connection

GB /T 9125 - 2003

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国标GB /T9125 - 2003 GB9125 9125GB Hex Bolt for Pipe Flange Connection
Download CAD Model*
Download CAD Model*

 *Models with different eras.

Thread Size
d
M10 M12 M14 M16 M20 M24 M27 M30 M33
P Pitch Coarse thread
Fine thread
very fine thread
b L≤125
125＜L≤200
L＞200
ds max=nominal size
min Grade A
Grade B
e min Grade A
Grade B
k Nominal Size
Grade A max
min
Grade B max
min
s max=nominal size
min Grade A
Grade B
1.5 1.75 2 2 2.5 3 3 3.5 3.5
1.25 1.5 1.5 1.5 2 2 2 2 2
1 1.25 - - 1.5 - - - -
26 30 34 38 46 54 60 66 -
32 36 40 44 52 60 66 72 78
45 49 53 57 65 73 79 85 91
10 12 14 16 20 24 27 30 33
9.78 11.73 13.73 15.73 19.67 23.67 - - -
9.64 11.57 13.57 15.57 19.48 23.48 26.48 29.48 32.38
17.77 20.03 23.36 26.75 33.53 39.98 - - -
17.59 19.85 22.78 26.17 32.95 39.55 45.2 50.85 55.37
6.4 7.5 8.8 10 12.5 15 17 18.7 21
6.58 7.68 8.98 10.18 12.715 15.215 - - -
6.22 7.32 8.62 9.82 12.285 14.785 - - -
6.69 7.79 9.09 10.29 12.85 15.35 17.35 19.12 21.42
6.11 7.21 8.51 9.71 12.15 14.65 16.65 18.28 20.58
16 18 21 24 30 36 41 46 50
15.73 17.73 20.67 23.67 29.67 35.38 - - -
15.57 17.57 20.16 23.16 29.16 35 40 45 49

Alternative history

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