材质 
M12
1.75
15.23
12
11.57
22.78
7.95
7.05
1
21
20.16
M14
2
17.23
14
13.57
26.17
8.95
8.05
1
24
23.16
M16
2
19.33
16
15.57
29.56
10.75
9.25
1
27
26.16
M18
2.5
22.32
18
17.57
32.95
12.4
10.6
1.5
30
29.16
M20
2.5
24.32
20
19.48
37.29
13.4
11.6
1.5
34
33
M22
2.5
26.32
22
21.48
39.55
14.9
13.1
1.5
36
35
M24
3
28.32
24
23.48
45.2
15.9
14.1
1.5
41
40
M27
3
32.84
27
26.48
50.85
17.9
16.1
2
46
45
M30
3.5
35.84
30
29.48
55.37
19.75
17.65
2
50
49
M33
3.5
38.84
33
32.38
60.79
22.05
19.95
2
55
53.8
M36
4
41.84
36
35.38
66.44
23.55
21.45
2
60
58.8
M39
4
46
39
38.38
72.02
26.05
23.95
2.5
65
63.1
M42
4.5
49
42
41.38
76.95
27.05
24.95
2.5
70
68.1