规格 |
1/4 |
5/16 |
3/8 |
7/16 |
1/2 |
5/8 |
3/4 |
7/8 |
1 |
粗牙牙数 |
20 |
18 |
16 |
14 |
13 |
11 |
10 |
9 |
8 |
细牙牙数 |
28 |
24 |
24 |
20 |
20 |
28 |
16 |
14 |
12 |
对边,max |
11.13 |
12.70 |
14.27 |
15.88 |
19.05 |
23.83 |
28.58 |
33.32 |
38.10 |
头厚,max |
4.14 |
5.36 |
6.17 |
7.39 |
8.20 |
10.24 |
12.27 |
14.30 |
15.92 |
牙长 |
1≤6in
min |
19.05 |
22.22 |
25.40 |
28.57 |
31.75 |
38.10 |
44.45 |
50.80 |
57.15 |
1> 6in
min |
25.40 |
28.57 |
31.75 |
34.93 |
38.10 |
44.45 |
50.80 |
57.15 |
63.50 |
|