材质 
M6
1
15.1
13.3
6
5.35
3.5
2.9
3.48
2.7
0.5
M8
1.25
19.1
17.3
8
7.19
4.3
3.5
4.48
3.6
0.5
M10
1.5
24.3
22.16
10
9.03
5.5
4.5
5.48
4.6
0.5
M12
1.75
29.3
27.16
12
10.86
6.7
5.5
6.48
5.6
0.8
M14
2
33.6
31
14
12.70
7.7
6.3
7.9
6.55
0.8
M16
2
36.6
34
16
14.70
8.8
7.2
8.9
7.55
1
M20
2.5
45.6
43
20
18.38
9.9
8.1
10.9
9.55
1
M24
3
53.9
50.8
24
22.05
12
10
13.1
11.45
1.5