材质 
Φ6.5
6.487
6.451
M5
0.8
9.75
9.25
10
9.78
3.86
3.68
3.44
4.5
4.32
2
3.08
3.02
2.4
Φ8
7.987
7.951
M6
1
11.25
10.75
13
12.73
4.58
4.4
4.58
5.5
5.32
2.5
4.095
4.02
3.3
Φ10
9.987
9.951
M8
1.25
13.25
12.75
16
15.73
6.25
6.03
5.72
7
6.78
3.1
5.095
5.02
4.2
Φ13
12.984
12.941
M10
1.5
16.4
15.6
18
17.73
7.91
7.69
6.86
9
8.78
3.7
6.095
6.02
4.9
Φ16
15.984
15.941
M12
1.75
18.4
17.6
24
23.67
9.57
9.35
9.15
11
10.73
4.4
8.115
8.025
6.6
Φ20
19.98
19.928
M16
2
22.4
21.6
30
29.67
13.33
12.96
11.43
14
13.73
5
10.115
10.025
8.8
Φ25
24.98
24.928
M20
2.5
27.4
26.6
36
35.61
16.57
16.3
13.72
16
15.73
6.3
12.142
12.032
10