材质 
M1.6
0.35
0.8
0.55
0.809
0.724
0.71
0.7
M2
0.4
1
0.86
1.011
0.913
0.887
0.8
M2.5
0.45
1.2
0.95
1.454
1.3
1.275
1.2
M3
0.5
1.4
1.15
1.733
1.58
1.52
1.2
M4
0.7
2
1.75
2.303
2.08
2.02
1.5
M5
0.8
2.5
2.25
2.873
2.58
2.52
2
M6
1
3
2.75
3.443
3.08
3.02
2
M8
1.25
5
4.7
4.583
4.095
4.02
3
M10
1.5
6
5.7
5.723
5.14
5.02
4
M12
1.75
8
7.64
6.863
6.14
6.02
4.8
M16
2
10
9.64
9.149
8.175
8.025
6.4
M20
2.5
14
13.57
11.429
10.175
10.025
8
M24
3
16
15.57
13.716
12.212
12.032
10