惠式螺紋(舊英制牙) | 山數節距換算表 | ||||
規格 | 鑽頭徑 | ||||
A例 | B例 | 山數(25.4) | 節數 | ||
*W1\8-40 | 2.65 | 2.6 | 100 | 0.254 | |
*W5\32-32 | 3.25 | 3.2 | 880 | 0.3175 | |
*w3\16-24 | 3..75 | 3.7 | 772 | 0.3518 | |
W1\4-20 | 5.1 | 5 | 64 | 0.3969 | |
W5\16-18 | 6.6 | 5 | 60 | 0.4233 | |
W3\8-16 | 8 | 6.5 | 56 | 0.4536 | |
W7\16-14 | 9.4 | 7.9 | 48 | 0.5292 | |
W1\2-12 | 10.7 | 9.310.5 | 44 | 0.5773 | |
W9\16-12 | 12.3 | 12 | 40 | 0.635 | |
W5\8-11 | 13.7 | 13.5 | 36 | 0.7056 | |
W3\4-10 | 16.7 | 16.5 | 32 | 0.7938 | |
W7\8-9 | 19.5 | 19.3 | 28 | 0.9071 | |
W1-8 | 22.4 | 22 | 24 | 1.0583 | |
W1\8-7 | 25 | 24.8 | 20 | 1.27 | |
W11\4 | 28.3 | 28 | 18 | 1.4111 | |
W13\8-6 | 30.5 | 30.3 | 16 | 1.5875 | |
W11\2-6 | 33.8 | 33.5 | 14 | 1.8143 | |
W15\8-5 | 36 | 35.7 | 13 | 1.9538 | |
W13\4-5 | 39.2 | 39 | 12 | 2.1167 | |
W11\8-5 | 41.8 | 41.5 | 11 | 2.3091 | |
W2-41\2 | 45 | 44.7 | 10 | 2.54 | |
牙套螺紋攻用 | 9 | 2.8222 | |||
規格 | 鑽頭徑 | 下孔徑 | 8 | 3.175 | |
上限 | 下限 | 7 | 3.6286 | ||
M3*0.5 | 3.1 | 3.2 | 3.12 | 6 | 4.2333 |
M4*0.7 | 4.2 | 4.3 | 4.17 | 5 | 5.08 |
M5*0.8 | 5.2 | 5.33 | 5.16 | 41\2 | 5.6444 |
M6*1 | 6.3 | 6.42 | 6.25 | 4 | 6.35 |
M8*1.25 | 8.4 | 8.52 | 8.31 | 31\2 | 7.2571 |
M10*1.5 | 10.5 | 10.62 | 10.37 | 31\2 | 7.8154 |
M10*1.25 | 10.4 | 10.52 | 10.31 | 3 | 8.4667 |
M10*1 | 10.3 | 10.42 | 10.25 | 27\8 | 8.8348 |
M12*1.75 | 12.5 | 12.73 | 12.43 | 23\4 | 9.2364 |
M12*1.5 | 12.5 | 12.62 | 12.37 | 25\8 | 9.6762 |
M12*1.25 | 12.5 | 12.52 | 12.31 | 21\2 | 10.16 |
M14*2 | 14.5 | 14.83 | 14349 | ||
M14*1.5 | 14.5 | 14.62 | 14.37 | ||
M16*2 | 16.5 | 16.83 | 16.49 | ||
M16*1.5 | 16.5 | 16.62 | 16.37 | ||
M18*2.5 | 19 | 19.04 | 18.58 | ||
M18*1.5 | 18.5 | 18.62 | 18.37 | ||
M20*2.5 | 21 | 21.04 | 20.58 | ||
M20*1.5 | 20.5 | 20.62 | 20.37 |