Taper Conical
Pre-Machine NPT Thread
Carbide end mills designed to prepare an existing hole for an NPT / NPTF tap or thread mill operation. Allows the user to mill an existing hole with a conical form in line with the minor diameter of a pipe thread created via thread milling. Enables smaller horsepower machines to handle larger pipe thread machining in a wide range of materials.
- 1° 47' flute taper angle to prepare the minor diameter form
- Solid micro-grain carbide
- TiAlN-T21 coated for heat and wear resistance
- 4 helical flutes with corner radius
- HA - cylindrical shank design
