Cle-line C65729 Round Die 5-40 Unc High Speed Steel

Product Description

The CLE-LINE C65729 is a round threading die designed to cut external threads on bolts, screws, and rod stock. It cuts a 5-40 UNC right-hand thread profile in a single pass and is made from high-speed steel for durability under repeated use. At 0.25 inches thick, the die fits standard round die stocks sized for this series. The adjustable design allows the operator to fine-tune thread fit and compensate for tool wear, making it suitable for production runs as well as one-off repair work. Machinists, tool-and-die workers, and maintenance technicians use this die for threading small-diameter fasteners and hardware in both shop and field settings.

This die is intended for cutting 5-40 UNC external threads on ferrous and non-ferrous materials. The right-hand thread direction matches standard fastener convention, making it the correct choice for the vast majority of threading applications. It is commonly used in machine shops, assembly operations, and maintenance environments where small-diameter unified coarse threads are required. The high-speed steel construction holds a cutting edge well across a range of workpiece materials.

Key Features

• Cuts 5-40 UNC right-hand external threads
• High-speed steel construction for extended cutting life
• Adjustable design allows thread fit tuning and compensation for wear
• 0.25 inches thick - fits standard round die stocks for this series
• Series 0710 for straightforward replacement and tooling compatibility

Compatibility

Designed as an OEM-style replacement round die for use in standard round die stocks that accept Series 0710 dies of this thread size and thickness.

Installation Notes

Seat the die securely in the die stock before beginning any threading operation. Ensure the workpiece is properly chucked or fixtured and apply cutting fluid appropriate for the workpiece material to extend die life and improve thread finish. Inspect the die for chipping or wear before each use. Threading operations on hardened or abrasive materials will accelerate tool wear and may require reduced feed pressure.