E398 - 1/4 UNC Dormer HSS-E-PM Spiral Flute Tap - TiCN Coated
E398UNC1/4
E398
Thread size UNC 0.25 inch - 20 TPI, with thread tolerance class 93707, and maximum threading depth 0.625 inches. Unique Powder Metallurgy HSS-E PM substrate provides excellent combination of toughness and edge hardness.
| Thread Diameter Size (TDZ) | 1/4 |
| Pitch (TPI) | 20 |
| Thread Diameter (TD) | 6.35mm |
| Overall Length (OAL) | 80.0mm |
| Thread Length (THL) | 10.0mm |
| Shank Diameter (DCON MS) | 7.00mm |
| Square Diameter (WSC) | 5.50mm |
| Square Length (LSC) | 8.0mm |
| Number Of Flutes | 3 |
| Premachined Hole Diameter (PHD) | 5.10mm |
| Usable Length (LU) | 30.00mm |
E398UNC1/4 E398 - 1/4 UNC DORMER HSS-E-PM SPIRAL FLUTE TAP - TICN COATED