材质 
M8
1.25
9
12
6
17
2
6.65
M10
1.5
11
15
8
20
3
8.38
M12
1.75
13
18
9
21
3
10.11
M16
2
18
24
13
28
4
13.84
M20
2.5
25
30
18
38
5
17.29
M24
3
32
36
22
46
6
20.75
M30
3.5
40
45
28
57
8
26.21
M36
4
50
54
35
70
9
31.67
M42
4.5
57
63
40
79
11
37.13
M48
5
63
72
44
87
12
42.59
M52
5
71
78
49
97
13
46.59
M56
5.5
80
84
56
109
14
50.05
M64
6
89
96
63
121
16
57.51
M72
6
100
108
70
135
18
65.51
M80
6
113
120
79
152
20
73.51
M90
6
126
135
89
169
23
83.51
M100
6
141
150
99
189
25
93.51