E397 - 1/4 UNF Dormer HSS-E-PM Spiral Point Tap - TiCN Coated
E397UNF1/4
E397
Thread size UNF 0.25 inch - 28 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) | 28 |
| Thread Diameter (TD) | 6.35mm |
| Overall Length (OAL) | 80.0mm |
| Thread Length (THL) | 15.0mm |
| Shank Diameter (DCON MS) | 7.00mm |
| Square Diameter (WSC) | 5.50mm |
| Square Length (LSC) | 8.0mm |
| Number Of Flutes | 3 |
| Premachined Hole Diameter (PHD) | 5.50mm |
| Usable Length (LU) | 30.00mm |
E397UNF1/4 E397 - 1/4 UNF DORMER HSS-E-PM SPIRAL POINT TAP - TICN COATED