材质 
M1.6
0.35
0.8
0.55
0.809
0.724
0.7
0.71
0.65
0.4
M2
0.4
1
0.75
1.011
0.913
0.8
0.887
0.75
0.5
M2.5
0.45
1.5
1.25
1.454
1.3
1.2
1.275
0.88
0.63
M3
0.5
2
1.75
1.733
1.58
1.2
1.52
1
0.75
M4
0.7
2.5
2.25
2.303
2.08
1.5
2.02
1.25
1
M5
0.8
3.5
3.2
2.873
2.58
2
2.52
1.5
1.25
M6
1
4
3.7
3.443
3.08
2
3.02
1.75
1.5
M8
1.25
5.5
5.2
4.583
4.095
3
4.02
2.25
2
M10
1.5
7
6.64
5.723
5.14
4
5.02
2.75
2.5
M12
1.75
8.5
8.14
6.863
6.14
4.8
6.02
3.25
3
M16
2
12
11.57
9.149
8.175
6.4
8.025
4.3
4
M20
2.5
15
14.57
11.429
10.175
8
10.025
5.3
5
M24
3
18
17.57
13.716
12.212
10
12.032
6.3
6