公称直径 | 每英寸牙数 | 钻头直径 | 镗孔 | 公称直径 | 每英寸牙数 | 钻头直径 | 镗孔 | |
Rc1/8 | 28 | 8.2 | Rc1 1/2 | 11 | 44 | |||
Rc1/4 | 19 | 10.9 | Rc2 | 11 | 55.5 | |||
Rc3/8 | 19 | 14.5 | Rc2 1/2 | 11 | 71.1 | |||
Rc1/2 | 14 | 18 | Rc3 | 11 | 83.6 | |||
Rc3/4 | 14 | 23.5 | Rc4 | 11 | 108.4 | |||
Rc1 | 11 | 29.5 | Rc5 | 11 | 133.6 | |||
Rc1 1/4 | 11 | 38 | Rc6 | 11 | 259 |