Osg 2707400 Round Threading Die 9/16-12 Unc Hss

Product Description

The OSG 2707400 is a round threading die designed to cut external threads on ferrous workpieces including iron and steel. It produces a 9/16-12 UNC right-hand thread profile and is manufactured from high-speed steel for durability under production and maintenance shop conditions. The die measures 1.5 inches in outside diameter and 0.5 inches in thickness, fitting standard round die holders of that size. The adjustable design allows the operator to fine-tune thread fit by closing or opening the die slightly via the holder set screws. This tool is typically used by machinists, maintenance technicians, pipefitters, and fabricators who need to cut or recut inch-series external threads.

This die is suited for threading rod stock, fastener blanks, and repair work on damaged bolt threads in iron and steel. The 9/16-12 UNC designation indicates a Unified National Coarse thread standard, which is common in structural and general-purpose mechanical assemblies. It fits Series 134 round die holders with a 1.5-inch bore. The adjustable feature accommodates slight thread-fit variation, making it useful for both new thread cutting and chasing worn or corroded threads in the field or shop.

Key Features

• 9/16-12 UNC right-hand thread profile for standard inch-series fastener applications
• High-speed steel construction for resistance to heat and wear during cutting
• 1.5-inch outside diameter fits Series 134 round die holders
• Adjustable die allows fine-tuning of thread tolerance via holder set screws
• Compatible with iron and steel workpiece materials
• 0.5-inch thickness provides stable thread engagement along the cutting length

Compatibility

Designed for use on iron and steel. Fits Series 134 round die holders with a 1.5-inch bore. Intended for cutting 9/16-12 UNC right-hand external threads.

Installation Notes

Round dies are installed and operated by qualified machinists or trained maintenance personnel using a matching round die holder and handle. Secure the die firmly in the holder before use and apply appropriate cutting oil to the workpiece to extend die life and improve thread finish. Inspect the workpiece diameter against the recommended major diameter for 9/16-12 UNC before cutting. Adjust the die set screw only in small increments to avoid overloading the cutting edges.