材质 
M8
1.25
12
11.76
5.24
4.76
0.4
13.8
8
M10
1.5
14
13.76
6.24
5.76
0.4
16.2
10
M12
1.75
17
16.76
7.29
6.71
0.6
19.6
12
M14
2
19
18.72
8.29
7.71
0.6
21.9
14
M16
2
22
21.72
9.29
8.71
0.6
25.4
16
M18
2.5
24
23.72
10.29
9.71
1
27.7
18
M20
2.5
27
26.72
11.35
10.65
1
31.2
20
M22
2.5
30
29.72
12.35
11.65
1
34.6
22
M24
3
32
31.66
13.35
12.65
1
36.9
24
M27
3
36
35.66
15.35
14.65
1
41.6
27
M30
3.5
41
40.66
17.35
16.65
1
47.3
30
M36
4
50
49.66
20.42
19.58
1.5
57.7
36
M42
4.5
55
54.6
23.42
22.58
1.5
63.5
42
M48
5
65
64.6
26.42
25.58
1.5
75
48