Hertel R837538T Pipe Tap 2-11/2 Nptf 7 Flutes Hss Tin

Product Description

The HERTEL R837538T is a standard pipe tap designed for cutting National Pipe Taper Fuel (NPTF) threads in metal workpieces. Built from high speed steel (HSS) and finished with a titanium nitride (TiN) coating, it delivers extended cutting life and reduced friction during threading operations. The 7-flute configuration supports chip evacuation and provides a smooth thread form in through-hole and short-projection applications. This tap is intended for use by machinists, pipefitters, and plumbing fabricators working with 2 - 11-1/2 NPTF thread sizes in production or maintenance environments.

This tap is suited for threading pipe connections in plumbing, HVAC, and industrial piping systems where NPTF sealing threads are required. The short projection tap type makes it appropriate for applications where clearance is limited. The 1.75-inch thread length accommodates standard pipe wall thicknesses encountered in commercial and industrial fabrication work. It is packaged individually and used wherever a precision NPTF thread must be cut to achieve a pressure-tight seal without a separate sealant.

Key Features

• NPTF thread standard for pressure-tight pipe connections
• High speed steel construction for durability in metal threading applications
• TiN coating reduces friction and extends tool life
• 7-flute design promotes efficient chip evacuation
• Short projection tap type for use in limited-clearance setups
• 1.75-inch thread length suitable for standard pipe wall thicknesses

Compatibility

Designed for cutting 2 - 11-1/2 NPTF threads in ferrous and non-ferrous metals. Fits standard tap holders and machines that accept a 1.875-inch shank diameter with a 1.406-inch square drive size.

Installation Notes

This tap is installed and operated by machinists or pipefitters using a compatible tap wrench, drill press, or CNC tapping machine. Ensure the workpiece is securely fixtured and the pilot hole is drilled to the correct NPTF tap drill diameter before threading. Apply cutting fluid appropriate for the workpiece material to reduce heat and extend tool life. Inspect the tap for wear or chipping before each use to avoid thread damage or tap breakage.