Cle-line C65631 Hex Rethreading Die 1-3/8-12 Unf

Product Description

The CLE-LINE C65631 is a hex rethreading die designed to restore damaged or corroded external threads to their original specification. Built from carbon steel, this fixed-geometry die cuts a 1-3/8-12 UNF right-hand thread profile and measures 1 inch thick. Rethreading dies are used to clean up thread damage on bolts, studs, rods, and pipe fittings without requiring full removal or replacement of the fastener. The hex outer body seats in a standard die stock for controlled hand operation. This tool is a staple in mechanical, plumbing, HVAC, and industrial maintenance work where restoring threaded connections in the field is faster than replacing hardware.

This die is suited for professional trades work on equipment, piping, and structural hardware where 1-3/8-12 UNF threads appear. Common applications include restoring threads on hydraulic cylinder rods, heavy equipment fasteners, and large-diameter plumbing or mechanical fittings. The right-hand thread direction matches the standard orientation found on the vast majority of industrial and mechanical fasteners. The fixed, non-adjustable design ensures consistent thread geometry on every pass.

Key Features

• 1-3/8-12 UNF thread specification for fine-pitch external thread restoration
• Carbon steel construction provides durability for repeated use on steel and softer-alloy fasteners
• 1 inch thickness accommodates standard die stocks
• Right-hand thread direction matches industry-standard fastener orientation
• Non-adjustable design ensures repeatable, consistent thread profile
• Hex outer body for secure seating in a matching die stock

Compatibility

Designed as an OEM-style replacement or direct-use rethreading die for applications requiring a 1-3/8-12 UNF right-hand thread profile on external threaded components.

Installation Notes

Installation of this die requires a properly sized hex die stock; verify the stock inner diameter matches the die outer dimension before use. Always secure the workpiece in a vise or holding fixture before applying the die stock to prevent movement during threading. Apply cutting oil or thread-cutting lubricant to the die and workpiece to extend tool life and improve thread quality. This task is typically performed by a machinist, pipefitter, or mechanical service technician.