材质 
M2
0.4
25
2
1.65
3.2
3.02
3.38
1.6
1.3
2.6
0.1
M2.5
0.45
25
2.5
2.12
4
3.82
4.28
2.1
1.8
3.1
0.1
M3
0.5
25
3
2.58
5
4.82
5.4
2.3
2
3.6
0.1
M3.5
0.6
38
3.5
3
5.5
5.32
5.96
2.6
2.3
4.1
0.1
M4
0.7
38
4
3.43
7
6.78
7.59
3
2.6
4.7
0.2
M5
0.8
38
5
4.36
8
7.78
8.71
3.8
3.3
5.7
0.2
M6
1
38
6
5.21
10
9.78
10.95
4.7
4.1
6.8
0.3
M8
1.25
38
8
7.04
13
12.73
14.26
6
5.2
9.2
0.4
M10
1.5
38
10
8.86
16
15.73
17.62
7.5
6.5
11.2
0.4
M12
1.75
38
12
10.68
18
17.73
19.86
9
7.8
13.2
0.4