材质 
M6
1
37
35
6
5.35
128
132
M8
1.25
42.5
40
8
7.19
138
142
M10
1.5
48
45
10
9.03
148
152
M12
1.75
58.5
55
12
10.86
168
172
M16
2
69
65
16
14.70
187.7
192.3
M20
2.5
80
75
20
18.38
207.7
212.3
M24
3
91
85
24
22.05
227.7
232.3
M30
3.5
112
105
30
27.73
267.4
272.6
M36
4
133
125
36
33.40
307.4
312.6
M42
4.5
154
145
42
39.08
347.1
352.9
M48
5
175
165
48
44.75
387.1
392.9