Cle-line C66703 Two Piece Adjustable Die 5/16-18 Unc

Product Description

The CLE-LINE C66703 is a two-piece adjustable threading die designed to cut external threads on round stock. It accepts a 5/16-18 UNC thread profile and is manufactured from carbon steel for reliable cutting performance across a range of common fastener materials. The two-piece adjustable design allows the technician to set cutting depth incrementally, making it suitable for both initial threading passes and cleanup work on damaged or corroded threads. This die is used by plumbers, HVAC technicians, electricians, and general trade professionals who need to fabricate or restore threaded rod, bolts, or pipe fittings in the field or shop.

This die is suited for light to medium threading tasks in residential and commercial maintenance, fabrication, and repair applications. It fits into standard round die stocks that accept the corresponding collet size, allowing use with common hand-operated threading equipment. Typical applications include threading all-thread rod, machine screws, and small-diameter fastener stock to 5/16-18 UNC specifications.

Key Features

• Two-piece adjustable construction allows incremental depth-of-cut control for cleaner threads
• 5/16-18 UNC thread form for compatibility with standard unified coarse fastener stock
• Carbon steel construction provides adequate hardness for threading mild steel, brass, and aluminum
• Collet number 1.5 designation for use with matching die stock holders
• Lightweight at 0.08 pounds for easy handling and portability

Compatibility

Designed for use in round die stocks that accept the collet 1.5 configuration, suitable for cutting 5/16-18 UNC external threads on compatible threaded rod and fastener stock.

Installation Notes

A licensed machinist, pipefitter, or experienced trade technician should operate threading dies in a properly secured die stock. Secure the workpiece firmly in a vise before beginning the threading operation. Apply cutting oil to the die and workpiece to reduce heat and extend die life. Inspect the die for chipping or wear before each use and replace if cutting edges are damaged.