材质 
M3
0.5
3.6
3
2.86
6.01
2.125
1.875
0.1
5.5
5.32
M4
0.7
4.7
4
3.82
7.66
2.925
2.675
0.2
7
6.78
M5
0.8
5.7
5
4.82
8.79
3.650
3.350
0.2
8
7.78
M6
1
6.8
6
5.82
11.05
4.150
3.850
0.25
10
9.78
M8
1.25
9.2
8
7.78
14.38
5.450
5.150
0.4
13
12.73
M10
1.5
11.2
10
9.78
17.77
6.580
6.220
0.4
16
15.73
M12
1.75
13.7
12
11.73
20.03
7.68
7.32
0.6
18
17.73
M14
2
15.7
14
13.73
23.36
8.98
8.62
0.6
21
20.67
M16
2
17.7
16
15.73
26.75
10.18
9.82
0.6
24
23.67
M18
2.5
20.2
18
17.73
30.14
11.715
11.285
0.6
27
26.67
M20
2.5
22.4
20
19.67
33.53
14.715
12.285
0.8
30
29.67
M22
2.5
24.4
22
21.67
37.72
14.215
13.785
0.8
34
33.38
M24
3
26.4
24
23.67
39.98
15.215
14.785
0.8
36
35.38