材质 
M12
1.75
22.78
12.3
11.87
21
20.16
M14
2
25.94
14.3
13.60
24
23.16
M16
2
29.56
17.1
16.40
27
26.16
M20
2.5
37.29
20.7
19.40
34
33
M24
3
45.2
24.2
22.90
41
40
M27
3
50.85
27.6
26.30
46
45
M30
3.5
55.37
30.7
29.10
50
49
M33
3.5
60.26
33.5
31.90
55
53.8
M36
4
65.86
36.5
34.90
60
58.8
M39
4
70.67
39.5
37.90
65
63.1
M42
4.5
70.67
42.5
40.9
65
63.1
M45
4.5
76.27
45.5
43.92
70
68.1
M48
5
81.87
48.5
46.9
75
73.1
M52
5
87.47
52.5
50.6
80
78.1
M56
5.5
92.74
56.5
54.6
85
82.8
M64
6
103.94
64.5
62.6
95
92.8
M72
6
115.14
72.5
70.6
105
102.8
M76
6
120.74
76.5
74.6
110
107.8
M80
6
126.45
80.5
78.6
115
113.6
M90
6
142.8
90.5
88.3
130
127.5