Vargus 52391 Threading Insert 12 Tpi Acme 3G Solid Carbide

Product Description

The VARGUS 52391 is a solid carbide laydown threading insert designed for single-point internal threading operations. It cuts right-hand Acme 3G threads at 12 threads per inch with a 29-degree included angle, matching the standard Acme thread form per ANSI B1.5:1988. The TiAlN coating is applied via PVD process, improving wear resistance and tool life across a wide range of workpiece materials. With a 9.53 mm inscribed circle and 3.6 mm thickness, this insert fits standard 3IR-style toolholders. Machinists and CNC lathe operators working on lead screws, power transmission components, or linear actuator assemblies will find this insert ready for production use.

This insert is suited for internal Acme thread profiling on CNC lathes and manual thread-turning applications. The VTX grade and universal primary workpiece material rating make it appropriate for steel, stainless steel, cast iron, nonferrous metals, and high-temperature alloys. It is well matched to applications requiring precise 12 TPI Acme thread forms in medium to high production environments, including aerospace, industrial machinery, and general manufacturing settings.

Key Features

• Solid carbide construction with PVD TiAlN coating for extended wear life
• Cuts right-hand internal Acme 3G threads at 12 TPI with 29-degree included angle
• 9.53 mm (3/8 inch) inscribed circle fits standard 3IR-style toolholders
• VTX grade rated for universal workpiece materials including steels, stainless, cast iron, nonferrous, and superalloys
• Conforms to ANSI B1.5:1988 Acme thread standard
• Manufactured under ISO 9001:2008 quality system

Compatibility

Designed as an OEM-style replacement threading insert for 3IR-style internal threading toolholders accepting a 3/8-inch inscribed circle laydown insert.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Power down and lock out the machine before seating or replacing inserts. Use the appropriate torx or clamp screw driver to secure the insert to the recommended torque per the toolholder manufacturer specifications. Verify insert seating and clearance angles before resuming cutting operations.