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JG/T 5057.8-1995
Construction machinery and equipment high strength bolts with hexagon flange-reduced shank—Type A
Nom
P
da max
dc max
ds max
ds min
e min
k max
r min
s max
s min
M12
1.75
13.7
26.6
12
11.73
19.68
10.4
0.6
18
17.57
M14
2
15.7
30.5
14
13.73
22.58
12.4
0.6
21
20.16
M16
2
17.7
35
16
15.73
25.94
14.1
0.6
24
23.16
M18
2.5
20.2
39
18
17.73
29.56
15.9
0.7
27
26.16
M20
2.5
22.4
43
20
19.67
32.6
17.7
0.8
30
29.16
M22
2.5
24.4
47
22
21.67
37.29
19.5
0.9
34
33
M24
3
26.4
51
24
23.67
39.55
21.4
0.9
36
35
M27
3
30.4
57
27
26.67
45.2
24.1
1
41
40
M30
3.5
33.4
63
30
29.67
50.85
26
1
46
45
M33
3.5
36.4
70
33
32.61
55.37
29.5
1.2
50
49
M36
4
39.4
77
36
35.61
60.79
31.7
1.2
55
53.8
M39
4
42.4
83
39
38.61
66.44
33.5
1.4
60
58.8
M42
4.5
45.6
90
42
41.61
70.02
37.4
1.4
65
63.8
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