材质 
M2.5
0.45
4.68
4.32
2.303
2.5
2.36
2.08
2.02
1.1
2.34
2.2
0.52
0.68
0.9
1.1
1.5
1.2
M3
0.5
5.68
5.32
2.873
3
2.86
2.58
2.52
1.3
2.83
2.69
0.7
0.9
1.1
1.3
2
1.6
M4
0.7
7.22
6.78
3.443
4
3.82
3.08
3.02
2
3.78
3.6
1
1.2
1.4
1.6
2.75
2.2
M5
0.8
8.72
8.28
4.583
5
4.82
4.095
4.02
2.5
4.75
4.45
1.2
1.4
1.9
2.1
3.25
2.6
M6
1
10.22
9.78
5.723
6
5.7
5.14
5.02
3
5.71
5.41
1.5
1.7
2.35
2.65
4
3.2
M8
1.25
13.27
12.73
6.863
8
7.64
6.14
6.02
4
7.64
7.28
1.9
2.1
2.85
3.15
5
4
M10
1.5
16.27
15.73
9.149
10
9.64
8.175
8.025
5
9.59
9.23
2.35
2.65
3.3
3.7
6.25
5
M12
1.75
18.27
17.73
11.429
12
11.57
10.175
10.025
6
11.53
11.1
2.85
3.15
3.8
4.2
7.5
6