材质 
M5
0.8
6
8.63
3.12
3.875
0.2
8
7.64
M6
1
7.2
10.89
3.62
4.38
0.25
10
9.64
M8
1.25
10.2
14.2
4.92
5.68
0.4
13
12.57
M10
1.5
12.2
18.72
5.95
6.85
0.4
17
16.57
M12
1.75
14.7
20.88
7.05
7.95
0.6
19
18.48
M16
2
18.7
26.17
9.25
10.75
0.6
24
23.16
M20
2.5
24.4
32.95
11.6
13.4
0.8
30
29.16
M24
3
28.4
39.55
14.1
15.9
0.8
36
35
M30
3.5
35.4
50.85
17.65
19.75
1
46
45
M36
4
42.4
60.79
21.45
23.55
1
55
53.8