材质 
Φ6
6.012
6.004
0.8
1.2
M4
6
0.7
Φ8
8.015
8.006
1
1.6
M5
8
0.8
Φ10
10.015
10.006
1.2
2
M6
10
1
Φ12
12.018
12.007
1.6
2.5
M6
12
1
Φ16
16.018
16.007
2
3
M8
16
1.25
Φ20
20.021
20.008
2.5
3.5
M10
18
1.5
Φ25
25.021
25.008
3
4
M16
24
2
Φ30
30.021
30.008
4
5
M20
30
2.5
Φ40
40.025
40.009
5
6.3
M20
30
2.5
Φ50
50.025
50.009
6.3
8
M24
36
3