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CNS 3125-1980
Hexagon head fitting bolts for steel structures
Nom
P
ds max
ds min
b min
e
k
r
s
M12
1.75
13
12.89
18.5
20.88
8
0.6
19
M16
2
17
16.89
22
26.17
10
0.6
24
M20
2.5
21
20.87
26
32.95
13
0.8
30
M22
2.5
23
22.87
28
35.03
14
0.8
32
M24
3
25
24.87
29.5
39.55
15
0.8
36
M27
3
28
27.87
32.5
45.2
17
1
41
M30
3.5
31
30.84
35
50.85
19
1
46
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