材质 
M2
0.4
0.9
0.8
0.8
3.5
3.425
3.5
3.5
3.38
0.3
M2.5
0.45
1
0.8
1
3.8
3.725
3.8
4
3.88
0.3
M3
0.5
1.2
1
1.2
4.2
4.125
4.2
4.5
4.38
0.3
M3.5
0.6
1.6
1
1.4
5
4.925
5
5.5
5.38
0.3
M4
0.7
1.8
1
1.4
5.5
5.425
5.5
6
5.88
0.4
M5
0.8
2
1
2.5
7
6.91
7
7.5
7.35
0.6
M6
1
2.5
1
3
8
7.91
8
9
8.85
0.6