Milwaukee Tool 49-57-5391 Hex Pipe Die 1/4-18 Npt

Product Description

The MILWAUKEE TOOL 49-57-5391 is a hex pipe conduit die designed to cut 1/4-18 NPT threads on pipe and conduit. Manufactured from carbon steel, this die delivers consistent thread form across right-hand NPT cuts used in standard piping and conduit installations. The hex body measures 1-7/16 inches across flats, allowing it to seat properly in compatible die stocks and pipe threading machines. At 1/2 inch thick and 0.17 pounds, the die is a compact replacement component suited for job-site and shop use by licensed plumbers, pipefitters, and electricians running threaded conduit.

This die is used wherever 1/4-18 NPT threads are required on pipe or conduit runs in residential and commercial installations. Typical applications include threading small-diameter pipe for gas, water, or conduit systems where a right-hand NPT thread is the required standard. It is sold as a single die and is intended for use in a matching hex die stock or threading machine that accepts a 1-7/16 inch hex die body.

Key Features

• Thread size: 1/4-18 NPT for standard pipe thread form
• Right-hand thread direction for conventional pipe and conduit applications
• Carbon steel construction for durability through repeated threading cycles
• 1-7/16 inch hex body for secure seating in compatible die stocks
• 1/2 inch die thickness in a compact, lightweight form at 0.17 pounds
• Sold individually for targeted replacement without purchasing a full set

Compatibility

Designed as an OEM-style replacement hex pipe conduit die for use in die stocks and pipe threading machines that accept a 1-7/16 inch hex die body with 1/4-18 NPT thread form.

Installation Notes

Installation of this die should be performed by a qualified plumber, pipefitter, or electrician familiar with pipe threading equipment. Ensure the threading machine or die stock is fully de-energized and the work piece is secured before seating or removing the die. Apply appropriate threading oil to the die and pipe during the threading operation to extend die life and produce clean thread form. Completed NPT threaded connections should be inspected and tested to the pressure requirements of the applicable code before placing the system in service.