材质 
M10
1.5
10
9.78
17.77
6.58
6.22
0.4
16
15.73
M12
1.75
12
11.73
20.03
7.68
7.32
0.6
18
17.57
M14
2
14
13.73
23.35
8.98
8.62
0.6
21
20.67
M16
2
16
15.73
26.75
10.18
9.82
0.6
24
23.16
M18
2.5
18
17.73
30.14
11.715
11.285
0.6
27
26.67
M20
2.5
20
19.67
33.53
12.715
12.285
0.8
30
29.16
M22
2.5
22
21.67
37.72
14.215
13.785
0.8
34
33.38
M24
3
24
23.67
39.98
15.215
14.785
0.8
36
35
M27
3
27
26.67
45.2
17.215
16.785
1
41
40
M30
3.5
30
29.67
50.85
18.915
18.485
1
46
45