材质 
M10
1.5
11.2
10
9.78
18.9
6.58
6.22
0.4
17
16.73
M12
1.75
13.7
12
11.73
21.1
7.68
7.32
0.6
19
18.67
M14
2
15.7
14
13.73
24.49
8.98
8.62
0.6
22
21.67