Osg 2727200 Round Threading Die 5-40 Unc Hss Right Hand

Product Description

The OSG 2727200 is a round threading die used to cut external threads on iron and steel fasteners and workpieces. It produces 5-40 UNC right-hand threads and measures 0.8125 inches in outside diameter with a thickness of 0.25 inches. Made from high-speed steel, the die maintains cutting edge hardness under the heat generated during threading operations. The adjustable design allows the operator to fine-tune thread fit by opening or closing the die slightly using the set screws on a standard round die holder. This die belongs to OSG Series 134 and is suited for manual or machine-assisted threading work performed by machinists, maintenance technicians, and tool-and-die professionals.

This die is intended for threading ferrous materials including iron and steel. The 5-40 thread designation indicates a number 5 screw diameter with 40 threads per inch, a common fine-thread specification found in instrument hardware, small fasteners, and precision mechanical assemblies. It fits standard 0.8125-inch round die holders and stocks. Typical applications include creating threaded rod ends, rethreading damaged fasteners, and production threading of small-diameter steel components in shop or field maintenance settings.

Key Features

• 5-40 UNC right-hand thread form for iron and steel workpieces
• High-speed steel construction retains hardness and edge life under threading heat
• Adjustable die body allows fine-tuning of thread fit and tolerance
• 0.8125-inch outside diameter fits standard round die stocks and holders
• 0.25-inch thickness suits compact threading in tight spaces
• OSG Series 134 design for consistent thread geometry

Compatibility

Designed for use on iron and steel materials. Fits standard 0.8125-inch round die holders and die stocks used with 5-40 UNC threading applications.

Installation Notes

Round dies are installed and operated by machinists or maintenance technicians using a matching round die stock or holder. Secure the die firmly in the holder with all set screws engaged before starting a cut. Apply appropriate cutting oil to the workpiece to reduce heat and extend die life. Inspect the workpiece diameter against thread pitch specifications before cutting to avoid overloading or damaging the die.