Milwaukee Tool 49-57-5345 Hex Rethreading Die M8x1

Product Description

The MILWAUKEE TOOL 49-57-5345 is a hex rethreading die designed to restore damaged or corroded external threads on metric fasteners. Built from carbon steel, this die fits standard 1.0-inch hex holders and engages M8x1 metric fine threads with a right-hand cutting direction. At 0.5 inches thick and weighing 0.06 pounds, it is compact enough for tight-access work. Licensed trades and maintenance technicians use it when bolts, studs, or threaded rod need to be cleaned up and returned to service without full replacement. The Hex-LOK series design locks securely into compatible tap and die holders to prevent slipping during use.

This rethreading die is suited for residential and commercial maintenance applications where metric fine-thread fasteners have been damaged by corrosion, cross-threading, or mechanical wear. It is commonly used by HVAC technicians, plumbers, electricians, and general maintenance trades when servicing equipment with metric fastener hardware. The M8x1 metric fine pitch is a common thread specification found on equipment panels, motor mounts, valve assemblies, and structural fasteners throughout mechanical systems.

Key Features

• M8x1 metric fine thread profile restores damaged external threads to specification
• Carbon steel construction provides durability for repeated use on steel and softer fastener materials
• 1.0-inch hex drive fits standard hex-style tap and die stock holders
• Right-hand thread direction matches the most common fastener orientation
• Non-adjustable fixed profile ensures consistent thread form on every pass
• 0.5-inch thickness suits confined work areas where full-length dies are impractical

Compatibility

Designed for use with 1.0-inch hex tap and die holders accepting Hex-LOK series dies for M8x1 metric fine external thread rethreading applications.

Installation Notes

Rethreading dies are installed and operated by the appropriate licensed trade or maintenance technician. Before use, de-energize, depressurize, or otherwise isolate the equipment containing the fastener being serviced. Apply cutting oil to the die and the fastener to reduce heat and extend die life. Do not force the die onto a badly deformed thread; remove gross damage with a file before chasing with the die.