Vargus 59477 4IR Threading Insert 5 Tpi Acme 3G Solid Carbide

Product Description

The VARGUS 59477 is a solid carbide laydown threading insert designed for cutting right-hand internal Acme (3G) threads at 5 threads per inch (TPI). Manufactured in the 4IR insert style, it carries a PVD-applied TiAlN coating for extended tool life across a wide range of workpiece materials. The insert seats in standard 4IR toolholders and is suited for CNC lathes and turning centers used in precision threading operations. With an inscribed circle of 12.70 mm (1/2 inch) and a thickness of 4.76 mm, the 59477 is built to ANSI B1.5:1988 dimensional standards and produced under ISO 9001:2008 quality management.

This insert is intended for internal Acme thread profiles in general machining environments. The 29-degree included angle matches the Acme thread form. Its universal primary workpiece material classification covers ferrous, non-ferrous, stainless, heat-resistant alloys, hardened materials, and cast iron, making it a versatile choice for job shops and production facilities running varied material types. Machinists, CNC programmers, and toolroom technicians working on lead screws, power screws, and Acme-threaded components will find this insert applicable to a broad range of threading applications.

Key Features

• Solid carbide construction with PVD TiAlN coating for wear resistance and thermal stability
• 4IR insert style with 12.70 mm (1/2 inch) inscribed circle for use in standard 4IR boring bar holders
• 5 TPI Acme (3G) right-hand internal thread profile with 29-degree included angle
• Universal material compatibility covering steels, stainless, cast iron, non-ferrous, and superalloys
• Built to ANSI B1.5:1988 Acme thread standard
• Produced under ISO 9001:2008 certified manufacturing processes

Compatibility

Designed as an OEM-style replacement threading insert for standard 4IR internal threading toolholders configured for Acme 3G right-hand thread profiles at 5 TPI.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Ensure the machine spindle is fully stopped and locked out before seating or removing threading inserts. Use the appropriate torx or hex key specified by the toolholder manufacturer to secure the insert clamp to the recommended clamping torque range for carbide inserts. Verify insert orientation and thread hand before beginning any threading pass.