材质 
M12
1.75
13.7
26.6
12
11.73
19.68
10.4
0.6
18
17.57
M14
2
15.7
30.5
14
13.73
22.58
12.4
0.6
21
20.16
M16
2
17.7
35
16
15.73
25.94
14.1
0.6
24
23.16
M18
2.5
20.2
39
18
17.73
29.56
15.9
0.7
27
26.16
M20
--
22.4
43
20
19.67
32.6
17.7
0.8
30
29.16
M22
2.5
24.4
47
22
21.67
37.29
19.5
0.9
34
33
M24
3
26.4
51
24
23.67
39.55
21.4
0.9
36
35
M27
3
30.4
57
27
26.67
45.2
24.1
1
41
40
M30
3.5
33.4
63
30
29.67
50.85
26
1
46
45
M33
3.5
36.4
70
33
32.61
55.37
29.5
1.2
50
49
M36
4
39.4
77
36
35.61
60.79
31.7
1.2
55
53.8
M39
4
42.4
83
39
38.61
66.44
33.5
1.4
60
58.8
M42
4.5
45.6
90
42
41.61
70.02
37.4
1.4
65
63.8