美制牙UNF | 牙數 | 下料孔徑 |
NO.0 | 80 | 1.25 |
NO.1 | 72 | 1.55 |
NO.2 | 64 | 1.84 |
NO.3 | 56 | 2.12 |
NO.4 | 48 | 2.39 |
NO.5 | 44 | 2.68 |
NO.6 | 40 | 2.96 |
NO.8 | 36 | 3.56 |
NO.10 | 32 | 4.14 |
NO.12 | 28 | 4.7 |
1/4 | 28 | 5.56 |
5/16 | 24 | 7 |
3/8 | 24 | 8.6 |
7/16 | 20 | 10 |
1/2 | 20 | 11.6 |
9/16 | 18 | 13 |
5/8 | 18 | 14.6 |
3/4 | 16 | 17.6 |
7/8 | 14 | 20.6 |
1” | 12 | 23.5 |
1-1/8 | 12 | 26.7 |
1-1/4 | 12 | 29.9 |
1-1/2 | 12 | 36.2 |
