Cle-line C65612 Hex Rethreading Die 9/16-12 Unc

Product Description

The CLE-LINE C65612 is a hex rethreading die designed to chase and restore damaged or corroded external threads without removing the fastener or fitting from service. Sized for 9/16-12 UNC thread, this die is ground to right-hand thread direction from carbon steel for reliable cutting performance on standard unified coarse fasteners. The hex body profile allows a standard open-end or box-end wrench to drive the die, making it practical for field repairs in tight spaces. It is a fixed, non-adjustable die suited for cleanup work on bolts, studs, and threaded rod encountered in HVAC, plumbing, and mechanical assembly work.

This rethreading die is used in maintenance and repair applications where fastener threads have been damaged by corrosion, cross-threading, or impact. It is appropriate for residential and commercial service work wherever 9/16-12 UNC fasteners appear, including equipment mounting hardware, pipe flanges, and structural connections. Technicians working on HVAC equipment, plumbing fixtures, and general mechanical systems will find this die useful for recovering fasteners in place rather than cutting and replacing threaded components.

Key Features

• 9/16-12 UNC thread size for standard unified coarse fastener service
• Right-hand thread direction matches the vast majority of field fasteners
• Carbon steel construction provides adequate hardness for chasing threads on steel and softer alloy fasteners
• Hex body profile driven by common open-end or box-end wrench - no special die stock required
• Fixed, non-adjustable design delivers consistent thread form on every pass
• Compact form factor suited for field use in confined areas

Compatibility

Designed for use on external 9/16-12 UNC right-hand threads as an OEM-style rethreading die for maintenance and repair of standard unified coarse fasteners.

Installation Notes

Rethreading dies are installed by a mechanic, HVAC technician, or plumber as part of routine fastener maintenance. De-energize or isolate any equipment before working on fasteners in live systems. Apply a thread-cutting or machine oil to the die before use to reduce friction and extend die life. Work the die slowly onto the damaged thread, backing off periodically to clear chips and verify thread alignment.