High Speed Steel Taper Pipe Taps (NPT) are designed for tapping ferrous and non-ferrous fittings used to connect pipes carrying

fluids or gases and other places where very tight fits are needed. NPT threads taper 3/4” per foot and all of the threads on this

tap do the cutting as compared to a (NPS) straight pipe tap where only the non-chamfered threads do the cutting. They require

a sealant such as Teflon tape or pipe joint compound to prevent leakage of fluids or gases. NPT pipe taps can be used to tap

threads to military aeronautical thread specifications (ANPT) and for work requiring ground thread accuracy and performance.

(NPTF) Taper Thread Pipe Taps do not require sealants. Dryseal is attained by metal to metal contact.

Tap Drill Size   11/16