Value Collection 366-0361 Hex Rethreading Die 9/16-12 Lh Unc

Product Description

The VALUE COLLECTION 366-0361 is a hex rethreading die designed to restore damaged or corroded external threads on fasteners, bolts, and threaded rod. Sized for 9/16-12 Unified National Coarse (UNC) thread, it cuts in the left-hand direction, making it the correct choice for left-hand threaded fasteners commonly found in certain mechanical assemblies where reverse-rotation loosening must be prevented. Manufactured from carbon steel, this die delivers reliable cutting performance on standard ferrous and non-ferrous fasteners. Machinists, maintenance technicians, and trade professionals use rethreading dies as a fast field or shop repair tool to clean up thread damage without full fastener replacement.

This die is suited for use in maintenance, repair, and overhaul (MRO) settings across HVAC, plumbing, electrical, and general mechanical trades. It is appropriate wherever a 9/16-12 left-hand threaded fastener needs to have its external threads chased or restored. The hex body profile allows it to be driven with a standard open-end wrench or adjustable wrench, making it practical for both bench work and in-place repairs where a die stock handle may not fit.

Key Features

• 9/16-12 UNC thread size for left-hand external thread restoration
• Left-hand thread direction for specialized fastener applications requiring reverse threading
• Carbon steel construction provides adequate hardness for chasing threads on common fastener materials
• Hex body profile accepts standard open-end or adjustable wrenches — no dedicated die stock required
• Compact, lightweight design at 0.09 pounds for easy inclusion in a tool pouch or service kit

Compatibility

Designed for use on external 9/16-12 UNC left-hand threaded fasteners including bolts, studs, and threaded rod. Suitable for field thread repair and shop rethreading operations on standard left-hand threaded assemblies.

Installation Notes

Rethreading dies are used by machinists and qualified trade technicians to clean up damaged external threads. Before use, de-energize or isolate any equipment the fastener is part of and ensure the work area is secure. Apply a suitable cutting or tapping fluid to the fastener before engaging the die to reduce friction and extend die life. Thread the die onto the fastener slowly and back off periodically to clear chips, following standard thread-chasing practice.