|
尺寸代号
|
每寸牙数
|
大径
|
中径
|
小径
|
建议底孔
|
基准距离
|
牙数
|
|
1/8
|
27
|
10.242
|
9.489
|
8.736
|
φ8.6
|
4.102
|
4.36
|
|
1/4
|
18
|
13.616
|
12.487
|
11.358
|
φ11.1
|
5.786
|
4.10
|
|
3/8
|
18
|
17.055
|
15.926
|
14.797
|
φ14.5
|
6.096
|
4.32
|
|
1/2
|
14
|
21.223
|
19.772
|
18.321
|
φ17.9
|
8.128
|
4.48
|
|
3/4
|
14
|
26.568
|
25.117
|
23.666
|
φ23.2
|
8.611
|
4.75
|
|
1
|
11.5
|
33.228
|
31.461
|
29.694
|
φ29.2
|
10.160
|
4.60
|
|
1-1/4
|
11.5
|
41.985
|
40.218
|
38.451
|
φ37.9
|
10.668
|
4.83
|
|
1-1/2
|
11.5
|
48.054
|
46.287
|
44.520
|
φ43.9
|
10.668
|
4.83
|
