先端絲攻
適用於碳鋼、合金鋼的通孔加工，有優異的排屑
1.常用為英制、公制兩種規範
2.絲攻標示範例
| M14*2.0 | 7/8" W9 | ||
| M14 | 2.0 | 7/8" | W9 |
| 公制牙，14mm | 牙距 2.0mm | 英制牙 7/8英吋 | 牙距 每1英吋9牙 |
4.標準施做方式為三支一組(#1、#2、#3)
5.規格如下：
| M1*0.25 | M9*1.25 | M24*1.5 | W 1/8-40 |
| M1.2*0.25 | M10*1.0 | M24*2.0 | W 5/32-32 |
| M1.4*0.3 | M10*1.25 | M24*3.0 | W 3/16-24 |
| M1.6*0.35 | M10*1.5 | M25*1.5 | W 1/4-20 |
| M1.7*0.35 | M12*1.0 | M25*2.0 | W 5/16-8 |
| M2*0.4 | M12*1.25 | M26*1.0 | W 3/8-16 |
| M2.3*0.4 | M12*1.5 | M26*2.0 | W 7/16-14 |
| M2.5*0.45 | M12*1.75 | M27*1.5 | W 1/2-12 |
| M2.6*0.45 | M14*1.0 | M27*2.0 | W 9/16-12 |
| M3*0.35 | M14*1.25 | M27*3.0 | W 5/8-11 |
| M3*0.5 | M14*1.5 | M28*1.5 | W 3/4-10 |
| M3*0.6 | M14*2.0 | M28*2.0 | W 7/8-9 |
| M3.5*0.35 | M15*1.0 | M30*1.0 | W 1"-8 |
| M3.5*0.6 | M15*1.5 | ,30*1.5 | W 1"1/8-7 |
| M4*0.7 | M16*1.0 | M30*2.0 | W 1"1/4-7 |
| M4*0.75 | M16*1.5 | M30*3.0 | W 1"3/8-6 |
| M4*0.75 | M16*2.0 | M30*3.5 | W 1"1/2-6 |
| M4.5*0.75 | M18*1.0 | M32*1.5 | W 1"3/4-5 |
| M5*0.5 | M18*1.5 | M32*2.0 | W 1"7/8-(4-1/2) |
| M5*0.8 | M18*2.0 | M33*1.5 | W 2"-(4-1/2) |
| M5*0.9 | M18*2.5 | M33*2.0 | |
| M5.5*0.9 | M20*1.0 | M33*3.0 | |
| M6*0.5 | M20*1.5 | M35*1.5 | |
| M6*0.75 | M20*2.0 | M36*1.5 | |
| M6*1.0 | M20*2.5 | M36*2.0 | |
| M7*1.0 | M22*1.0 | M36*3.0 | |
| M8*0.75 | M22*1.5 | M36*4.0 | |
| M8*1.0 | M22*2.0 | ||
| M8*1.25 | M22*2.5 | ||
| M9*1.0 | M24*1.0 |