Value Collection 314-4270 Round Die 5/8-18 Unf Lh Hss

Product Description

The VALUE COLLECTION 314-4270 is a round threading die designed to cut external left-hand threads in a 5/8-18 UNF thread form. Manufactured from high-speed steel (HSS), this die delivers the hardness and heat resistance needed for threading steel, stainless, and other ferrous materials in production and maintenance work. The adjustable design allows the operator to fine-tune cutting diameter for fit and finish, making it suitable for both roughing and finishing passes. Machinists, tool and die technicians, and maintenance mechanics use this die for fabricating or repairing left-hand threaded fasteners and fittings.

This die is intended for use in a standard round die stock holder sized for the appropriate outside diameter. Left-hand thread applications include specialty fasteners, turnbuckles, counterclockwise-rotation shafts, and mechanical assemblies where right-hand threads would loosen under operational torque. The 5/8-18 UNF designation indicates a fine-pitch thread commonly found in automotive, aerospace, and precision mechanical applications. Suitable for both bench work and light production threading operations.

Key Features

• High-speed steel construction provides hardness and wear resistance for threading steel and ferrous alloys
• Left-hand thread direction for specialty fastener fabrication and repair
• 5/8-18 UNF fine-pitch thread form for precision fit applications
• Adjustable die allows cutting diameter fine-tuning for roughing and finishing passes
• Round die form fits standard round die stock holders

Compatibility

Designed as an OEM-style replacement or standard tooling addition compatible with round die stock holders sized to accept this die outside diameter, used wherever 5/8-18 UNF left-hand external threads are required.

Installation Notes

This die is installed and secured in a matching round die stock holder using the holder set screws; ensure the holder is properly sized before use. Secure the workpiece firmly in a vise before threading to prevent movement. Apply cutting fluid generously during threading to reduce heat buildup and extend die life. Inspect the die for cracks or wear before each use and replace if cutting edges are chipped or dull.