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ASME/ANSI B18.2.3.3M-1979
Metric heavy hex screws
Nom
P
ds max
ds min
s max
s min
e max
e min
k max
k min
da max
r min
M12
1.75
12
11.73
21
20.67
24.25
23.35
7.76
7.24
13.7
0.6
M14
2
14
13.73
24
23.67
27.71
26.75
9.09
8.51
15.7
0.6
M16
2
16
15.73
27
26.67
31.18
30.14
10.32
9.68
17.7
0.6
M20
2.5
20
19.67
34
33
39.26
37.29
12.88
12.12
22.4
0.8
M24
3
24
23.67
41
40
47.34
45.2
15.44
14.56
26.4
0.8
M30
3.5
30
29.67
50
49
57.74
55.37
19.48
17.92
33.4
1
M36
4
36
35.61
60
58.8
69.28
66.44
23.38
21.72
39.4
1
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