Vargus 51432 Threading Insert 16 Tpi Unj External Solid Carbide

Product Description

The VARGUS 51432 is a solid carbide laydown threading insert designed for external UNJ thread forms at 16 threads per inch (TPI). It features a 3/8-inch inscribed circle (IC), a 60-degree included angle, and a TiN coating applied via PVD process. This insert is engineered for right-hand external threading operations on CNC lathes and turning centers. The VKX grade designation indicates a universal cutting grade suited for a wide range of workpiece materials. Licensed machinists and CNC operators use this insert for precision thread cutting in demanding production environments.

This insert is suited for external threading applications across a broad spectrum of workpiece materials, including steel, stainless steel, cast iron, non-ferrous metals, and high-temperature alloys, as reflected in the multi-code material classification. The UNJ thread standard specifies a controlled root radius, making this insert appropriate for aerospace and military-grade fastener threads where MIL-S-8879C compliance is required. It is used in both production shops and job shops running tight-tolerance threaded components.

Key Features

• Solid carbide construction with PVD-applied TiN coating for wear resistance and edge retention
• UNJ thread form with 60-degree included angle and controlled root radius per MIL-S-8879C
• 16 TPI right-hand external thread geometry in standard 3ER insert style
• 3/8-inch inscribed circle for use in compatible laydown insert toolholders
• Universal grade VKX suitable for steel, stainless, cast iron, non-ferrous, and superalloy materials
• ISO 9001:2008 certified manufacturing process

Compatibility

Designed for use in laydown-style external threading toolholders accepting the 3ER insert style with a 3/8-inch inscribed circle. Compatible workpiece material codes include H, K, M, N, P, and S per ISO material classification.

Installation Notes

Installation is performed by qualified CNC machinists or toolroom technicians. Ensure the machine spindle is fully stopped and the toolholder is secured before indexing or replacing inserts. Use the appropriate torque wrench and insert screw to seat the insert per the toolholder manufacturer specification. Verify thread form and pitch with calibrated thread gauges before running production cuts.