Milwaukee Tool 49-57-5333 Hex Rethreading Die 14-20

Product Description

The MILWAUKEE TOOL 49-57-5333 is a hex rethreading die engineered to restore damaged or corroded external threads to original specification. Part of the Hex-LOK series, this die is designed for 14-20 thread size per the UNS (Unified National Special) standard with a right-hand thread direction. Constructed from carbon steel, it provides the durability needed for repeated use on job-site fasteners and threaded rod. The fixed, non-adjustable design delivers consistent thread restoration without setup adjustment. The 1-inch hex drive and 1/2-inch thickness make it compatible with standard rethreading die handles and wrench sets used by trade professionals.

This rethreading die is suited for use by electricians, plumbers, pipefitters, and general mechanical contractors who regularly encounter corroded or cross-threaded fasteners on structural connections, pipe fittings, and equipment assemblies. It is particularly useful during maintenance and retrofit work where replacing fasteners entirely is impractical. The 14-20 UNS thread form is a specialty designation, making this die a critical tool for restoring threads that fall outside standard UNC or UNF classifications.

Key Features

• 14-20 UNS thread size for specialty thread restoration applications
• Carbon steel construction for durability through repeated use
• Right-hand thread direction, compatible with standard fastener orientation
• Fixed non-adjustable design ensures consistent thread profile
• 1-inch hex size fits standard die handles and wrenches
• Compact 1/2-inch thickness for use in tighter working clearances

Compatibility

Designed as an OEM-style rethreading die for use with standard 1-inch hex die stocks and rethreading wrench sets compatible with the Hex-LOK series format.

Installation Notes

This die should be installed and used by qualified tradespeople familiar with thread restoration procedures. Before rethreading any fastener or threaded component, ensure the assembly is de-energized, depressurized, or otherwise isolated from live service as required by the application. Secure the die properly in the die stock before applying torque, and apply appropriate cutting oil to reduce heat and extend die life. Always verify the restored thread with a mating nut or fitting before returning the assembly to service.