材质 
M3
0.5
5.5
5.34
4.24
3.76
6.3
M4
0.7
7
6.8
5.24
4.76
8.1
M5
0.8
8
7.8
6.24
5.76
9.2
M6
1
10
9.8
7.79
7.21
11.5
M8
1.25
14
13.76
9.35
8.65
16.2
M10
1.5
17
16.76
11.35
10.65
19.6
M12
1.75
19
18.72
14.35
13.65
21.9
M14
2
22
21.72
16.35
15.65
25.4
M16
2
24
23.72
18.42
17.58
27.7
M18
2.5
27
26.72
20.42
19.58
31.2
M20
2.5
30
29.72
22.42
21.58
34.6
M22
2.5
32
31.66
24.42
23.58
36.9
M24
3
36
35.66
26.42
25.58
41.6
M27
3
41
40.66
28.5
27.5
47.3
M30
3.5
46
45.66
32.5
31.5
53.1
M36
4
55
54.6
38.5
37.5
63.5
M42
4.5
65
64.6
44.5
43.5
75
M48
5
75
74.6
50.5
49.5
86.5