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
1.2
0.95
M3
0.5
1.545
1.52
1.73
0.6
1.4
1.15
M4
0.7
2.045
2.02
2.3
1
2
1.75
M5
0.8
2.56
2.52
2.87
1.2
2.5
2.25
M6
1
3.071
3.02
3.44
1.8
3
2.75
M8
1.25
4.084
4.02
4.58
1.8
5
4.7
M10
1.5
5.084
5.02
5.72
2
6
5.7
M12
1.75
6.095
6.02
6.86
3
8
7.64
M16
2
8.115
8.025
9.15
3
10
9.64
M20
2.5
10.127
10.025
11.5
6
14
13.57
M24
3
12.146
12.032
13.8
5
16
15.57