Value Collection 315-1242 Round Die 9/16-24 Unef Hss

Product Description

The VALUE COLLECTION 315-1242 is a round threading die designed to cut 9/16-24 UNEF external threads on round stock, bolts, and fastener blanks. Made from high-speed steel (HSS), it holds cutting edges at elevated temperatures, making it suitable for production threading and repair work in machine shops, fabrication facilities, and maintenance environments. The die features a right-hand thread direction and an adjustable design that allows minor pitch diameter corrections to achieve the desired thread fit. Machinists, tool and die workers, and maintenance technicians are the primary users.

This die is used wherever a 9/16-24 UNEF external thread must be cut or chased on a workpiece. The UNEF (Unified National Extra Fine) thread standard is common in applications requiring fine thread engagement in thin-walled parts, precision instruments, and aerospace-adjacent components. The adjustable design allows the operator to open or close the die slightly to control thread tolerance, making it useful for both rough threading and finish passes.

Key Features

• 9/16-24 UNEF thread size for extra-fine pitch external threading
• High-speed steel construction retains hardness and edge life under heat generated during cutting
• Adjustable design allows pitch diameter fine-tuning for thread fit control
• Right-hand thread direction — standard for the vast majority of threaded fastener applications
• Round die form fits standard die stocks and holders

Compatibility

Designed for use in standard round die stocks and holders that accept the appropriate die outside diameter. Suitable for cutting 9/16-24 UNEF right-hand external threads on compatible workpiece materials.

Installation Notes

Threading dies are installed and operated by machinists or skilled maintenance personnel familiar with hand threading and die stock use. Secure the workpiece firmly before threading and apply appropriate cutting fluid to extend die life and improve thread quality. Inspect the die for chipping or wear before each use. The adjusting screw should be set before threading begins and locked in position to maintain consistent pitch diameter throughout the cut.