Value Collection 366-1161 Hex Rethreading Die 1-1/4-7 Unc

Product Description

The VALUE COLLECTION 366-1161 is a hex rethreading die designed to restore damaged or corroded external threads on fasteners, pipe fittings, and threaded rod. It cuts a 1-1/4-7 UNC thread profile with a left-hand thread direction, making it the correct tool when working with left-hand threaded assemblies. The die measures 1 inch thick and is machined from carbon steel for durability under the friction and load of thread restoration work. Machinists, pipefitters, and maintenance technicians use rethreading dies to clean up field-damaged threads without full replacement of the fastener or fitting.

This die is suited for maintenance and repair applications in industrial, mechanical, and trade settings where large-diameter left-hand threads need to be chased or restored. The 1-1/4-7 UNC designation indicates a coarse-thread pitch, common on heavy fasteners and structural fittings. Left-hand thread direction is critical in applications where standard right-hand threads would loosen under rotational load, such as certain rotating equipment, gas fittings, and specialty assemblies. The hex outer profile seats in a standard die stock or wrench for controlled hand operation.

Key Features

• 1-1/4-7 UNC thread profile for coarse-pitch large-diameter rethreading
• Left-hand thread direction for specialty fastener and fitting applications
• 1 inch thick hex die body for full thread engagement and stability
• Carbon steel construction for resistance to wear during thread chasing
• Hex outer profile fits standard die stocks and adjustable wrenches

Compatibility

Designed for use with standard hex die stocks sized for large-diameter dies. Suitable for rethreading 1-1/4-7 UNC left-hand external threads on fasteners, rod, and fittings.

Installation Notes

Rethreading dies are installed and operated by machinists or qualified maintenance technicians. Secure the workpiece firmly before engaging the die to prevent movement. Apply cutting oil to the die and workpiece threads to reduce friction and extend die life. Always confirm thread direction before starting — engaging a left-hand die on a right-hand thread will cause damage to both the die and the workpiece.