Hertel H05767330 Threading Insert 12 Tpi 3/8 in Acme

Product Description

The HERTEL H05767330 is a laydown-style threading insert engineered for cutting external Acme threads on a lathe or CNC turning center. Built from solid carbide with a TiC/TiN coating, it delivers the hardness and thermal resistance needed for consistent thread form in steel, cast iron, and similar ferrous materials. The insert is rated at 12 threads per inch (TPI), features a 3/8-inch inscribed circle (IC), and measures 0.146 inches thick. Grade HG630TR is HERTEL's designation for this coated carbide substrate, suited to moderate-to-high cutting speeds in threading applications. Licensed machinists and CNC operators in production and job-shop environments are the primary users.

This insert is used in external threading operations where an Acme thread form is required — common in lead screws, power transmission components, jigs, and fixtures. The right-hand orientation means it threads in the conventional direction when mounted in a standard laydown threading toolholder. It is appropriate for both manual lathe threading passes and programmed CNC threading cycles on turning centers. Applications span general machining, industrial maintenance, and custom part production where Acme thread geometry must be held to close tolerance.

Key Features

• Solid carbide substrate with TiC/TiN coating for wear and heat resistance
• External Acme thread form at 12 TPI for power-transmission threading work
• 3/8-inch inscribed circle — standard laydown insert sizing for common toolholders
• Right-hand cut orientation for conventional threading direction
• 0.146-inch insert thickness provides stable seating in laydown pockets
• Relief angle of 0 degrees — flat-bottom seating geometry typical of laydown threading inserts

Compatibility

Designed as a laydown threading insert in the 16ER style for use with compatible 16ER-series external threading toolholders that accept a 3/8-inch IC laydown insert.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Power down and lock out the machine spindle before seating or replacing the insert. Use the correct torx or hex key as specified by the toolholder manufacturer to secure the clamp screw — do not overtighten. Confirm the insert is fully seated in the pocket and that the thread form is oriented correctly before taking a threading pass.