材质 
M1.6
0.35
0.724
0.711
0.803
0.6
0.8
0.55
M2
0.4
0.902
0.889
1.003
0.6
1
0.75
M2.5
0.45
1.295
1.27
1.427
0.7
1.5
1.25
M3
0.5
1.545
1.52
1.73
0.6
2
1.75
M4
0.7
2.045
2.02
2.3
1
2.5
2.25
M5
0.8
2.56
2.52
2.87
1.2
3.5
3.2
M6
1
3.071
3.02
3.44
1.8
4
3.7
M8
1.25
4.084
4.02
4.58
1.8
5.5
5.2
M10
1.5
5.084
5.02
5.72
2
7
6.64
M12
1.75
6.095
6.02
6.86
3
8.5
8.14
M16
2
8.115
8.025
9.15
3
12
11.57
M20
2.5
10.127
10.025
11.5
6
15
14.57
M24
3
12.146
12.032
13.8
5
18
17.57