Value Collection 366-0402 Hex Rethreading Die 5/8-18 Lh Unf

Product Description

The VALUE COLLECTION 366-0402 is a hex rethreading die designed to restore damaged or corroded external threads to their original specification. It is sized for 5/8-18 thread form and cuts in a left-hand direction, making it the correct tool for left-hand-threaded fastener applications. Built from carbon steel, the die delivers reliable cutting performance on common fastener materials. Rethreading dies like this one are used by mechanics, plumbers, and general maintenance technicians to salvage threaded rod, bolts, and fittings without full replacement. The hex outer profile allows standard die stock or wrench engagement for controlled torque application.

This die is suited for repair and maintenance work on left-hand-threaded fasteners across industrial, mechanical, and plumbing applications. It follows the UNF (Unified National Fine) thread standard at 5/8-18, meaning 5/8 inch nominal diameter with 18 threads per inch. Typical use cases include restoring threads on left-hand spindle bolts, specialty fittings, and equipment where reverse-thread fasteners are specified by design. It is sold individually and is appropriate for both shop use and field repair.

Key Features

• 5/8-18 UNF thread size for fine-pitch left-hand thread restoration
• Left-hand thread direction for reverse-threaded fastener applications
• Carbon steel construction provides adequate hardness for rethreading common fastener materials
• Hex outer profile accepts standard die stocks and adjustable wrenches
• Single-piece packaging, no minimum order beyond one unit

Compatibility

Designed as a replacement or supplemental rethreading die for use with standard hex die stocks sized to accept 5/8-18 UNF left-hand dies. Verify die stock inner dimension before use.

Installation Notes

Rethreading dies are installed and operated by mechanics, maintenance technicians, and plumbers using a compatible die stock or wrench. Before rethreading, clean the damaged fastener of debris and apply cutting oil to reduce heat and extend die life. Engage the die squarely onto the fastener to avoid cross-threading. Do not force the die past its cutting capacity on heavily deformed threads, as this can damage the die or the workpiece.