Value Collection 314-4379 Round Die 1-12 Unf 2 Inch Od Left Hand Hss

Product Description

The VALUE COLLECTION 314-4379 is a round threading die designed to cut external left-hand UNF threads at a 1-12 thread size. Machined from high-speed steel (HSS), this die delivers the hardness and heat resistance needed for production threading and repair work on metal fasteners, shafts, and fittings. The 2-inch outside diameter fits standard round die stocks and holders designed for that size. An adjustable design allows the technician to fine-tune cutting depth and compensate for wear, extending usable die life and improving thread quality on successive cuts.

This die is suited for machine shops, maintenance and repair operations, and industrial fabrication environments where left-hand external threads are required. Left-hand thread dies are used in applications where counter-clockwise rotation would loosen a standard right-hand fastener, such as certain bicycle components, turnbuckles, and specialized mechanical assemblies. Machinists and tool and die tradespeople are the primary installers and users of this product.

Key Features

• 1-12 UNF thread size for fine-pitch external threading
• Left-hand thread direction for reverse-thread applications
• 2-inch OD fits standard round die stocks sized for 2-inch dies
• High-speed steel construction resists heat and wear during cutting
• Adjustable design allows cutting depth fine-tuning and extends die service life

Compatibility

Designed as a replacement or supplemental round die for use in any standard 2-inch round die stock or holder that accepts 1-12 UNF tooling.

Installation Notes

Round dies of this type are installed and operated by machinists or experienced maintenance tradespeople using a properly sized die stock or die holder. Secure the die firmly in the holder and ensure the adjusting screw is set before beginning a threading pass. Apply cutting oil liberally during threading to reduce heat buildup and improve thread finish. Inspect threads with a go/no-go gauge after cutting to verify conformance.