Value Collection 315-1563 Round Die 1-3/8 18 Hss Unef

Product Description

The VALUE COLLECTION 315-1563 is a round threading die designed to cut external threads on cylindrical stock. Made from high-speed steel, it handles the heat and wear demands of production and maintenance threading work. This die cuts a 1-3/8-18 thread profile to the UNEF (Unified Extra Fine) standard with a right-hand thread direction. The adjustable design allows the operator to fine-tune the fit and compensate for minor wear over the life of the die. Machinists, toolmakers, and maintenance mechanics use round dies like this one for chasing damaged threads or cutting new threads on rod, bolt blanks, and custom fastener stock.

This die is suited for threading operations in machine shops, maintenance facilities, and manufacturing environments where UNEF thread profiles are specified. The 1-3/8-18 size is common in precision mechanical assemblies, instrumentation hardware, and aerospace-adjacent work where finer thread pitch is needed on larger-diameter stock. It is used with a standard round die stock holder sized for the die's outer diameter.

Key Features

• 1-3/8-18 thread size in the UNEF (Unified Extra Fine) standard
• High-speed steel construction for heat resistance and extended tool life
• Right-hand thread direction — standard for most fastener applications
• Adjustable die body allows thread fit tuning and compensates for wear
• Round die profile fits standard die stock holders

Compatibility

Designed as an OEM-style replacement or standard tooling option for use with round die stock holders that accept dies of this profile. Intended for cutting 1-3/8-18 UNEF right-hand external threads.

Installation Notes

This die is installed by a machinist or toolmaker into a matching round die stock holder. Secure the die in the holder using the set screws before beginning any threading operation. Apply cutting oil to the workpiece before and during threading to reduce heat buildup and extend die life. Do not force the die over stock that exceeds the nominal thread diameter without first confirming the workpiece is properly sized.