材质 
M6
1
15.1
6
5.35
3.5
3.48
0.5
M8
1.25
19.1
8
7.19
4.3
4.48
0.5
M10
1.5
24.3
10
9.03
5.5
5.48
0.5
M12
1.75
29.3
12
10.86
6.7
6.48
0.8
M14
2
33.6
14
12.70
7.7
7.9
0.8
M16
2
36.6
16
14.70
8.8
8.9
1
M20
2.5
45.6
20
18.38
9.9
10.9
1
M24
3
53.9
24
22.05
12
13.1
1.5