材质 
M3
0.5
3.6
5.7
5.4
2.303
1.65
1.4
0.1
2.08
2.02
1.04
M4
0.7
4.7
7.6
7.24
2.873
2.2
1.95
0.2
2.58
2.52
1.3
M5
0.8
5.7
9.5
9.14
3.443
2.75
2.5
0.2
3.08
3.02
1.56
M6
1
6.8
10.5
10.07
4.583
3.3
3
0.25
4.095
4.02
2.08
M8
1.25
9.2
14
13.57
5.723
4.4
4.1
0.4
5.14
5.02
2.6
M10
1.5
11.2
17.5
17.07
6.863
5.5
5.2
0.4
6.14
6.02
3.12
M12
1.75
14.2
21
20.48
9.149
6.6
6.24
0.6
8.175
8.025
4.16
M16
2
18.2
28
27.48
11.429
8.8
8.44
0.6
10.175
10.025
5.2