Hertel H08704496 Threading Insert 24 Tpi 1/4 Inch Ic

Product Description

The HERTEL H08704496 is a laydown threading insert designed for internal UN thread cutting operations. It carries the HG330TR manufacturer grade and is manufactured from solid carbide with a TiC/TiN coating for improved wear resistance and tool life. The insert cuts right-hand internal threads at 24 threads per inch (TPI) and features a 1/4 inch (0.2500 inch) inscribed circle with a thickness of 0.127 inches and a relief angle of 0 degrees. This insert is intended for use on CNC lathes and manual turning centers by machinists and tool-room professionals working to UN thread standards.

This threading insert is suited for internal thread cutting in production and job-shop environments where consistent UN thread profiles are required. The 11IR insert style fits compatible boring bar holders and threading toolholders designed for laydown-style inserts. Applications include threading bores in ferrous and non-ferrous workpieces across aerospace, industrial, and general manufacturing settings. The solid carbide substrate with TiC/TiN finish supports interrupted cuts and moderate to high cutting speeds typical of internal threading work.

Key Features

• Solid carbide substrate provides rigidity and wear resistance in internal threading applications
• TiC/TiN multilayer coating extends tool life and reduces built-up edge
• 24 TPI cutting profile conforms to UN thread standard
• Right-hand cutting geometry for standard internal thread direction
• 11IR insert style with 0 degree relief angle for laydown toolholder compatibility
• 1/4 inch inscribed circle (0.2500 inch) and 0.127 inch thickness for precise seating

Compatibility

Designed for use in laydown-style threading toolholders and boring bars that accept the 11IR insert style with a 1/4 inch inscribed circle. Verify holder specifications before installation to confirm proper seating and clamping.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Power down and lock out the machine before changing inserts. Use the appropriate torque wrench and clamping screw specified by the toolholder manufacturer to secure the insert. Inspect the insert pocket and clamping components for wear or damage before seating a new insert.