High Carbon Steel Fractional Bottoming Taps
High carbon steel fractional bottoming taps are ideal for cutting right-hand internal threads.
- Bottoming taps have 1-1/2 threads chamfered for tapping to the bottom of a hole
- Four-flute design on all taps ensures fast and easy chip clearance
- Required drill size is permanently etched on the tool for quick and easy reference
| Item # | Size | Thread Length | Overall Length | Shank Diameter | Number of Flutes | Use Drill Bit Size | Quantity |
|---|---|---|---|---|---|---|---|
| 20268 | 1/4" - 20 NC | 1.000 | 2-1/2" | .250 / .257 | 4 | 7 | 3, 1 per card |
| 20269 | 1/4" - 28 NF | 1.000 | 2-1/2" | .250 / .257 | 4 | 3 | 3, 1 per card |
| 20270 | 5/16" - 24 NF | 1.125 | 2-23/32" | .314 / .318 | 4 | F | 3, 1 per card |
| 20271 | 5/16" - 24 NF | 1.125 | 2-23/32" | .314 / .318 | 4 | I | 3, 1 per card |
| 20272 | 3/8" - 16 NC | 1.250 | 2-15/16" | .376 / 3.81 | 4 | 5/16" | 3, 1 per card |
| 20273 | 3/8" - 24 NF | 1.250 | 2-15/16" | .376 / .381 | 4 | 21/64" | 3, 1 per card |
| 20274 | 7/16" - 14 NC | 1.437 | 3-5/32" | .318 / .321 | 4 | 3/8" | 3, 1 per card |
| 20275 | 7/16" - 20 NF | 1.437 | 3-5/32" | .318 / .321 | 4 | 25/64" | 3, 1 per card |
| 20276 | 1/2" - 13 NC | 1.656 | 3-3/8" | .362 / .364 | 4 | 27/64" | 3, 1 per card |
| 20277 | 3/16" - 32 NS | 1.656 | 2-3/8" | 1.88 / .195 | 4 | 29/64" | 3, 1 per card |