Value Collection 366-0201 Hex Rethreading Die 5/16-18 Lh

Product Description

The VALUE COLLECTION 366-0201 is a hex rethreading die designed to restore damaged or corroded external threads without requiring full thread cutting from scratch. Built from carbon steel, it fits standard hex die holders and handles 5/16-18 thread size in a left-hand direction to the UNC thread standard. Rethreading dies like this one are used by mechanics, pipefitters, and maintenance technicians to chase and clean existing threads on bolts, studs, and fasteners, restoring usable thread profiles quickly in the field or shop.

This die is suited for repair work on left-hand threaded fasteners in automotive, industrial, and mechanical maintenance applications. Left-hand thread configurations appear on components such as certain spindle assemblies, rotating shaft hardware, and specialized mechanical equipment where standard right-hand threads are not used. The 5/16-18 UNC designation makes it a common size for general fastener repair across a wide range of equipment and machinery.

Key Features

• 5/16-18 UNC thread size for broad compatibility with standard left-hand threaded fasteners
• Left-hand thread direction for repair of counter-threaded hardware
• Carbon steel construction provides adequate hardness for chasing and restoring thread profiles
• Hex body design accepts standard hex die stocks and holders
• Lightweight at 0.2 pounds, suitable for portable toolkits

Compatibility

Designed as an OEM-style rethreading die for use with standard hex die stocks and holders that accept 5/16-18 left-hand UNC dies.

Installation Notes

A licensed or experienced machinist or maintenance technician should operate rethreading dies. Before use, ensure the fastener or stud to be rethreaded is clean and free of debris that could damage the die. Apply appropriate cutting oil to lubricate the die during thread chasing to extend tool life and improve thread quality. Verify thread direction before use — using a left-hand die on a right-hand thread will cause damage to both the fastener and the die.