Cle-Line 3/8"-18 NPT Pipe Thread Tap HSS 4 Flute 64216

Cle-Line 3/8"-18 NPT Thread Tap

This high-speed steel pipe tap cuts 3/8"-18 NPT threads with four flutes for efficient chip removal. The bright uncoated finish suits general-purpose threading in ferrous and non-ferrous materials. Overall length measures 2 9/16 inches with a 1 1/16 inch thread length. A 75 percent thread depth requires a 0.5625 inch drill size for proper preparation.

Ideal for maintenance and repair threading

Plumbers and mechanics cutting standard NPT pipe threads will find this tap matches common fitting specifications. Right-hand cutting direction follows conventional pipe-threading practice. Buyers needing left-hand threads or different thread standards such as BSPT should select an alternative tool. The four-flute design is not optimised for high-volume production tapping where specialised geometries may perform better.