材质 
M3
0.5
6
5.7
2.3
1.7
2.02
2.1
1.2
0.95
M4
0.7
8
7.64
2.87
2.3
2.52
2.6
1.8
1.55
M5
0.8
10
9.64
3.44
2.8
3.02
3.1
2.3
2.05
M6
1
12
11.57
4.58
3.3
4.02
4.12
2.5
2.25
M8
1.25
16
15.57
5.72
4.4
5.02
5.14
3.5
3.2
M10
1.5
20
19.48
6.86
5.5
6.02
6.14
4.4
4.1
M12
1.75
24
23.48
9.15
6.5
8.025
8.175
4.6
4.3
M14
2
27
26.48
11.43
7
10.025
10.175
4.8
4.5
M16
2
30
29.48
11.43
7.5
10.025
10.175
5.3
5
M18
2.5
33
32.38
13.72
8
12.032
12.212
5.5
5.2
M20
2.5
36
35.38
13.72
8.5
12.032
12.212
5.9
5.6
M22
2.5
36
35.38
16
13.1
14.032
14.212
8.8
8.44
M24
3
39
38.38
16
14
14.032
14.212
10.3
9.87