Hertel H08704793 Threading Insert 24 Tpi 3/8 in Ic Un

Product Description

The HERTEL H08704793 is a laydown-style threading insert designed for internal UN thread cutting at 24 threads per inch. Manufactured from solid carbide and finished with a TiC/TiN multilayer coating, this insert delivers wear resistance and thermal stability in threading operations on ferrous and non-ferrous materials. The right-hand configuration suits standard internal threading passes on CNC lathes and manual threading setups. With a 3/8-inch inscribed circle and a 0.146-inch thickness, the H08704793 conforms to the 16IR insert style geometry, making it a direct fit for compatible 16IR toolholders. Machinists and tool-and-die professionals use this insert for precision thread forming in production and job-shop environments.

This insert is suited for internal UN thread applications in both production machining and maintenance or repair threading work. The 24 TPI specification targets common UN fastener thread profiles used in general-purpose mechanical assemblies. The solid carbide substrate and TiC/TiN finish support consistent thread geometry across multiple passes, making it appropriate for threading bores in steel, cast iron, and similar workpiece materials. A relief angle of 0 degrees is standard for laydown threading insert designs and provides maximum edge support during the cut.

Key Features

• Solid carbide substrate with TiC/TiN multilayer coating for extended tool life
• 24 TPI UN internal thread profile, right-hand cut
• 16IR insert style with 3/8-inch (0.375-inch) inscribed circle
• 0.146-inch insert thickness for secure laydown seating
• 0-degree relief angle provides maximum cutting edge support
• HG330TR manufacturer grade suited for threading ferrous materials

Compatibility

Designed for use in 16IR-style internal threading toolholders configured for UN thread forms. Confirm toolholder insert pocket geometry and thread pitch compatibility before installation.

Installation Notes

Threading inserts should be installed by qualified machinists following machine tool manufacturer torque and clamping guidelines for the specific toolholder. Power down and lock out the machine spindle before changing inserts. Inspect the insert pocket and clamping screw for wear or damage before seating a new insert. Do not exceed the cutting parameters specified in the toolholder and insert manufacturer documentation.