Milwaukee Tool 49-57-5389 Hex Pipe Die 1/8-27 Npt

Product Description

The Milwaukee Tool 49-57-5389 is a hex pipe conduit die designed to cut 1/8-27 NPT threads on pipe and conduit. Manufactured from carbon steel, this die produces right-hand National Pipe Taper threads to the NPT standard, making it suitable for threaded pipe connections in plumbing, HVAC piping, and conduit work. The hex body measures 1 inch across flats and 3/8 inch in thickness, fitting standard die stocks and ratchet threaders that accept hex dies of that size. Plumbers, pipefitters, and electricians use this die when field-cutting and threading small-diameter pipe or conduit to NPT specification.

This die is intended for threading 1/8-inch nominal pipe to the NPT standard, which is common in low-pressure gas lines, instrumentation connections, small water supply branches, and electrical conduit fittings. The right-hand thread direction is the standard orientation for the vast majority of pipe assembly work. The compact hex geometry allows it to seat securely in ratchet die stocks designed for 1-inch hex dies, supporting consistent thread engagement and accurate taper production in the field or shop.

Key Features

• Cuts 1/8-27 NPT right-hand taper threads to national pipe thread standard
• Carbon steel construction for durability in repeated threading operations
• 1-inch hex body fits standard ratchet die stocks accepting 1-inch hex dies
• 3/8-inch thickness provides stable seating in the die stock
• Sold as a single replacement die for targeted restocking

Compatibility

Designed as a replacement hex pipe conduit die for use in ratchet die stocks and hand threading tools that accept 1-inch hex dies cutting 1/8-27 NPT threads. No specific compatible model numbers were provided in the product data.

Installation Notes

Installation of this die requires seating it securely in a compatible ratchet die stock before threading. Always depressurize, de-energize, or isolate the pipe or conduit before threading operations. Apply cutting oil generously during the threading process to extend die life and produce clean thread form. Work follows applicable codes such as IFGC for gas piping or NEC for conduit, depending on the application.