Value Collection 314-1114 Round Die 4-40 Unc 1 Inch Od Hss

Product Description

The VALUE COLLECTION 314-1114 is a round threading die designed to cut external 4-40 UNC threads on cylindrical workpieces. Manufactured from high-speed steel (HSS), it holds cutting edge hardness at elevated temperatures, making it suitable for repetitive threading in production and maintenance environments. The die measures 1 inch in outside diameter and features an adjustable design that allows minor thread fit adjustments through the set screws on the die holder. The right-hand thread direction is standard for 4-40 UNC fastener applications. Machinists, tool and die makers, and maintenance technicians install this type of die for cutting or chasing threads on small-diameter screws, studs, and rod stock.

This die is used in machine shops, manufacturing facilities, and maintenance shops where 4-40 UNC threaded components are produced or repaired. The 4-40 designation indicates a Number 4 screw diameter with 40 threads per inch, a common size in electronics, instrumentation, and light mechanical assemblies. The 1 inch OD fits standard round die stocks and holders designed for that outside diameter. The adjustable feature allows the operator to fine-tune thread tolerance from free-fit to close-fit depending on application requirements.

Key Features

• Cuts 4-40 UNC external threads, right-hand direction
• High-speed steel construction retains hardness under heat generated during threading
• Adjustable design allows thread fit to be dialed in using a die stock set screw
• 1 inch outside diameter fits standard round die stocks for that OD
• UNC thread standard for broad compatibility with inch-system fastener applications

Compatibility

Designed for use in any round die stock or die holder accepting a 1 inch OD round die. Cuts 4-40 UNC external threads on compatible rod, screw blanks, or studs.

Installation Notes

This die is installed and used by machinists or maintenance technicians familiar with hand or machine threading operations. Secure the die firmly in a properly sized die stock before use and apply cutting fluid appropriate for the workpiece material to extend die life and improve thread quality. Inspect the workpiece diameter against the 4-40 minor and major diameter specifications before threading. Do not force the die onto an oversized blank, as this will damage the cutting teeth.