材质 
M1.6
0.35
3.5
3.32
10
9.78
0.1
M2
0.4
4
3.82
11
10.73
0.1
M2.5
0.45
5
4.82
11
10.73
0.1
M3
0.5
6
5.82
12
11.73
0.1
M4
0.7
7
6.78
12
11.73
0.2
M5
0.8
8
7.78
13
12.73
0.2
M6
1
10
9.78
13
12.57
0.25