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钢结构用大六角高强度螺栓连接副 (GB/T 1228 - 1231 - 1991)
GB1228
强度级别 : 10.9S
螺纹 : 6g 
d |
12 |
16 |
20 |
(22) |
24 |
(27) |
30 |
s |
21 |
27 |
34 |
36 |
41 |
46 |
50 |
K |
7.5 |
10 |
12.5 |
14 |
15 |
17 |
18.7 |
L |
35-75 |
45-130 |
50-160 |
55-220 |
60-240 |
65-260 |
70-260 |
GB1229
强度级别 : 10H
螺纹 : 6H
D |
12 |
16 |
20 |
（ 22 ） |
24 |
（ 27 ） |
30 |
s |
21 |
27 |
34 |
36 |
41 |
46 |
50 |
m |
12.3 |
17.1 |
20.7 |
23.6 |
24.2 |
27.6 |
30.7 |
e |
22.8 |
29.6 |
37.3 |
39.6 |
45.3 |
50.9 |
55.4 |
GB1230
硬度 : HRC35-45
d |
12 |
16 |
20 |
(22) |
24 |
(27) |
30 |
d1 |
13 |
17 |
21 |
23 |
25 |
28 |
31 |
d2 |
25 |
33 |
40 |
42 |
47 |
52 |
56 |
S |
3 |
4 |
4 |
5 |
5 |
5 |
5 |
?b |
?0.2 |
δ5 |
Ψ |
ak |
扭矩系数 |
Mpa |
Mpa |
% |
% |
J/cm2 |
k |
? |
1040-1240 |
≥ 940 |
≥ 10 |
≥ 42 |
≥ 59 |
0.11-0.15 |
≤ 0.01 |
|
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