材质 
M1.6
0.35
7.22
6.78
4.7
4.52
0.1
M2
0.4
8.22
7.78
5
4.82
0.1
M2.5
0.45
9.22
8.78
5.5
5.32
0.1
M3
0.5
11.27
10.73
7
6.78
0.1
M4
0.7
12.27
11.73
8
7.78
0.2
M5
0.8
16.27
15.73
10
9.78
0.2
M6
1
20.33
19.67
12
11.57
0.25
M8
1.25
24.33
23.67
16
15.57
0.4
M10
1.5
30.33
30
20
19.48
0.4