材质 
M8
1
14.38
9.5
8.92
6.44
13
12.73
M10
1|1.25
17.77
11.9
11.2
8.04
16
15.73
M12
1.25|1.5
20.03
14.9
14.2
10.37
18
17.73
M14
1.5
23.36
17
15.9
12.1
21
20.67
M16
1.5
26.75
19.1
17.8
14.1
24
23.67
M20
1.5
32.95
22.8
20.7
16.9
30
29.16
M24
2
39.55
27.1
25
20.2
36
35
M30
2
50.85
32.6
30.1
24.3
46
45
M36
3
60.79
38.9
36.4
29.4
55
53.8