Description
YMW Taps, 387203, ZELX NI STI 4 mm UNC H1 Spiral Pointed Tap for Nickel Base Alloys
Features:
- ZELX NI STI have an Oxide and Nitride Surface Toughening Treatment PM High Speed Steel
- ZELX NI Taps have been designed for extended tap life in Cobalt, Nickel, and Iron base exotic materials such as: Inconel, Hatelloy, Waspalloy and harder stainless Steels, Mold and Tool Steels >30HRC.
- STI taps are oversize to the extent that the internal thread which they produce will accommodate a helical coil wire screw thread insert, which at final assembly will accept a screw thread of the nominal size and pitch.
| Chamfer | PLUG |
| Finish | NX |
| Material Type | HSS-P |
| Thread Class | UNC |
| Size | 4mm |
| Pitch Diameter Limit/ EDP Numbers | H1 |
| Thread Type | Spiral Pointed |
| Flute Type | SPIRAL |
| Number of Flutes | 3 |
| Cutting Direction | R/H |
| Length of Thread | 0.413″ |
| Neck Length | 0.274″ |
| Overal Length | 2″ |






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