材质 
M1.4
0.3
0.803
0.711
0.724
0.6
M1.6
0.35
0.803
0.711
0.724
0.7
M1.8
0.35
0.803
0.711
0.724
0.8
M2
0.4
1.003
0.889
0.902
0.8
M2.5
0.45
1.427
1.27
1.295
1.2
M3
0.5
1.73
1.52
1.545
1.2
M4
0.7
2.3
2.02
2.045
1.5
M5
0.8
2.87
2.52
2.56
2
M6
1
3.44
3.02
3.08
2
M8
1.25
4.58
4.02
4.095
3
M10
1.5
5.72
5.02
5.095
4
M12
1.75
6.86
6.02
6.095
4.5
M14
2
6.86
6.02
6.095
5.6
M16
2
9.15
8.025
8.115
6.4
M18
2.5
11.43
10.025
10.115
7.2
M20
2.5
11.43
10.025
10.115
8
M22
2.5
13.72
12.032
12.142
9
M24
3
13.72
12.032
12.142
10