Cle-line C65840 Round Threading Die 1/4-28 Unf Hss

Product Description

The CLE-LINE C65840 is a round threading die designed for cutting external threads on rod, bolt stock, and fasteners. Built from high-speed steel, it handles the heat and wear demands of production and repair threading work without dulling prematurely. The C65840 cuts a 1/4-28 UNF right-hand thread and measures 1/2 inch in thickness, fitting standard round die stocks and holders of the appropriate size. The adjustable design allows the operator to fine-tune thread fit and take cleanup passes when needed. Machinists, tool and die workers, and maintenance mechanics use this die for both new threading and chasing damaged threads in metal fabrication and repair applications.

The C65840 is suited for threading ferrous and non-ferrous metals in shop, industrial, and field maintenance settings. The 1/4-28 UNF specification is common in precision assemblies, instrumentation, and light mechanical components where a finer thread pitch is required compared to UNC. The die is part of the CLE-LINE Series 0710 lineup, which covers a range of round die sizes for general-purpose threading tasks. It is used by machinists, millwrights, and maintenance technicians working on threaded fastener repair or custom fabrication.

Key Features

• High-speed steel construction resists heat buildup and edge wear during threading
• Cuts 1/4-28 UNF right-hand external threads
• Adjustable design allows thread fit fine-tuning and cleanup passes
• 1/2 inch thickness fits standard round die stocks for this size range
• Part of the CLE-LINE Series 0710 for consistent sizing across the line

Compatibility

Designed as an OEM-style round die for use in standard round die stocks and holders sized for the 1/4-28 UNF thread class.

Installation Notes

Round dies are installed and operated by machinists and maintenance mechanics using a properly sized die stock or holder. Secure the die firmly in the holder using the set screws before use, and apply an appropriate cutting fluid for the material being threaded to extend die life and improve thread quality. Always start the die square to the workpiece to avoid crooked or damaged threads. Inspect the die and workpiece for damage before each use.