Hertel R127966K Pipe Tap 1-1/2-11-1/2 Npt 7 Flutes Hss Chrome

Product Description

The HERTEL R127966K is an interrupted thread pipe tap designed for cutting National Pipe Taper (NPT) threads in a 1-1/2 to 11-1/2 size range. Manufactured from high speed steel (HSS) with a chrome plating finish, this tap delivers durability and corrosion resistance in demanding threading applications. The interrupted thread design reduces cutting friction and helps clear chips more efficiently than standard continuous-thread taps. With 7 flutes and a regular hook geometry, it is suited for production and maintenance threading work performed by machinists, pipefitters, and plumbers working with schedule pipe and threaded fittings.

This pipe tap is used in applications requiring accurate NPT taper threads in metal pipe, fittings, and heavy-wall components. It is appropriate for use in both shop and field environments where standard pipe thread connections are required. The 1-3/4 inch thread length accommodates typical pipe wall thicknesses encountered in plumbing, HVAC, and industrial piping systems. The chrome finish helps resist corrosion during storage and repeated use in cutting fluid environments.

Key Features

• Interrupted thread geometry reduces cutting torque and improves chip evacuation
• 7-flute configuration provides smooth, accurate NPT taper thread form
• High speed steel construction resists heat and wear during threading operations
• Chrome plating finish adds corrosion resistance and extends service life
• Regular hook angle suited for general-purpose pipe threading
• 1-3/4 inch thread length handles standard pipe wall depths

Compatibility

Designed for cutting 1-1/2 to 11-1/2 NPT taper threads in compatible pipe, fittings, and machined components requiring standard National Pipe Taper thread form.

Installation Notes

This tap is installed using a tap wrench or machine spindle rated for the appropriate torque range. Secure the workpiece firmly before threading and apply a suitable cutting fluid to extend tap life and improve thread finish. Follow ASME B1.20.1 standards for NPT thread gauging after tapping. Inspect the tap for chipping or wear before each use and replace if cutting edges show damage.