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Click Specification

(Non-preferred) dimensions in parentheses.

Unit:mm

Strenthened Cup Head Square Neck Bolts - Type A

GB /T 794 (A) - 2021

Display drawing:

国标GB /T794 (A) - 2021 GB794 794GB Strenthened Cup Head Square Neck Bolts - Type A
Nominal Length L Tips:seclect Nominal Length L and get Thread length.
Thread Size
d
M6 M8 M10 M12 (M14) M16 M20
P Pitch
b L≤125
125＜L≤200
dk max
min
ds max
min
d1
k max
min
k1 max
min
R
R1
r min
r1 ≈
s max
min
t
x max
1 1.25 1.5 1.75 2 2 2.5
18 22 26 30 34 38 46
- 28 32 36 40 44 52
15.1 19.1 24.3 29 .30 33.6 36.6 45.6
13.3 17.3 22.16 27.16 31.16 34 43
6 8 10 12 14 16 20
5.7 7.64 9.64 11.57 13.57 15.57 19.48
10 13.5 16.5 20 23 26 32
3.98 4.98 6.28 7.48 8.9 9.9 11.9
3.2 4.1 5.4 6.6 7.55 8.55 10.55
4.4 5.4 6.4 8.45 9.45 10.45 12.55
3.6 4.6 5.6 7.55 8.55 9.55 11.45
14 18 24 26 30 34 40
4.5 5 7 9 10 10.5 14
0.25 0.4 0.4 0.6 0.6 0.6 0.8
0.3 0.3 0.3 0.5 0.5 0.5 0.5
6.3 8.36 10.36 12.43 14.43 16.43 20.52
5.84 7.8 9.8 11.76 13.76 15.76 19.72
0.3 0.3 0.3 0.5 0.5 0.5 0.5
2.5 3.2 3.8 4.4 5 5 6.3
Length of Thread b
- - - - - - -

Alternative history

GB /T 794 - 1988 GB /T 794 - 1993 GB /T 794A - 2021
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