Milwaukee Tool 49-57-5334 Hex Rethreading Die 1/4-20 Unc

Product Description

The MILWAUKEE TOOL 49-57-5334 is a hex rethreading die designed to restore damaged or corroded external threads on fasteners and threaded rod. Built from carbon steel, this die cuts a 1/4-20 UNC right-hand thread profile and fits into the Hex-LOK die holder system via its 1.0 inch hex outer dimension. The 0.5 inch thickness keeps it compact in the holder while maintaining full thread engagement. Licensed tradespeople and experienced DIYers use it for restoration work on bolts, studs, and threaded fittings across mechanical, plumbing, and structural applications.

This rethreading die is suited for field and shop use wherever 1/4-20 UNC fasteners have been fouled by rust, paint, impact damage, or cross-threading. It works in residential and light commercial settings. Typical applications include repairing machine bolts, equipment fasteners, and threaded rod ends before reassembly. The Hex-LOK series is designed to work with compatible Milwaukee hex die holders, making driver integration straightforward for technicians already in the Milwaukee Tool ecosystem.

Key Features

• Cuts 1/4-20 UNC right-hand threads for fast restoration of damaged fasteners
• Carbon steel construction provides durability for repeated use on standard fastener materials
• 1.0 inch hex outer dimension fits Hex-LOK compatible die holders
• 0.5 inch thickness - compact profile for use in tight tool holders
• Non-adjustable design ensures consistent thread geometry on every pass

Compatibility

Designed for use with Milwaukee Hex-LOK compatible die holders. Fits any holder accepting a 1.0 inch hex die. Intended for restoration of 1/4-20 UNC right-hand external threads.

Installation Notes

Rethreading dies are typically used by machinists, mechanics, plumbers, and HVAC technicians during fastener repair. Secure the die firmly in the appropriate hex holder before use and ensure the fastener is clamped or held stable. Apply cutting oil to the thread surface before running the die to reduce friction and extend die life. Do not force the die over severely deformed threads in a single pass - back off periodically to clear swarf.