Milwaukee
Milwaukee Tool 1/4"-18 NPT 1-7/16" Hex Threading Die
- SKU:
- MLW49-57-5391
- Availability:
- Usually Ships Same Day
- Weight:
- 0.17 LBS
Description

DUTY®
1/4-18 NPT
Hex Threading Die
Create or restore 1/4-18 NPT external threads with a precision-machined hex die.
Product Overview
The high-carbon-steel die cuts brass, aluminum and mild steel; match the required thread.
Black oxide helps resist corrosion; laser sizing and the marked starting side guide setup.
- Precision cuttingMachined thread profile.
- Easy setupStarting side is clearly marked.
- Clear sizingLaser-etched thread size.
- Hex drive1-7/16 in hex body.
Technical Specifications
- Thread
- 1/4-18 NPT
- Hex body
- 1-7/16 in
- Die steel
- High carbon
- Finish
- Black oxide
- Threading
- External
- Size marks
- Laser etched
Choose the Correct Fit
Confirm 1/4-18 NPT is the specified thread. Check the thread form as well as nominal size and pitch.
Use a matching 1-7/16 in die stock or wrench. This body is larger than the 1 in Hex-LOK format.
Installation & Care
Secure the work and start the die square. Milwaukee recommends cutting fluid for the best results.
Clear chips safely with the tool stopped. Clean and dry the die, and check its cutting edges before reuse.
Small Details. Big Jobsite Energy.
Get set. Stay focused. Make your next move count.
THE NEXT JOB.
Ask Willy:
Need a thread match? Tell Willy the thread size, pitch, work material and the die holder you plan to use.
Important Product Questions
Will it cut an internal thread?
This die cuts or repairs external threads. An internal threaded hole requires a suitable tap rather than this hex die.
Which holder should I choose?
Use a matching 1-7/16 in die stock or wrench. This body is larger than the 1 in Hex-LOK format.
Can I substitute a nearby thread size?
Use the specified 1/4-18 NPT form. NPT and BSP threads are not interchangeable; match the specified pipe-thread standard.