Iscar 5902339 Threading Insert 16ERM 13 Un IC908 Carbide

Product Description

The ISCAR 5902339 is a laydown threading insert designed for external UN thread cutting at 13 threads per inch. Built from solid carbide with a TiAlN PVD coating, this insert carries ISCAR grade IC908 and is engineered for right-hand external threading operations. It features a 3/8-inch (0.375 inch) inscribed circle and a thickness of 0.143 inches. The IC908 grade is suited for a wide range of workpiece materials, making it a practical choice for shops cutting UN-standard threads across varied stock. Machinists and CNC lathe operators running production or toolroom work will find this insert fits the ISCARTHREAD series toolholding system.

This insert is intended for external UN threading applications on CNC lathes and manual turning centers. It is rated for use across multiple material groups including steel, stainless steel, cast iron, non-ferrous metals, high-temperature alloys, and hardened materials, corresponding to ISO material codes H, K, M, N, P, and S. The M chipbreaker geometry and PVD TiAlN coating support consistent chip control and tool life across these material grades. It is sold in a minimum order quantity of 5 inserts, with each package containing 1 insert.

Key Features

• Solid carbide construction with PVD TiAlN coating for wear resistance across multiple material groups
• ISCAR IC908 manufacturer grade rated for ISO material groups H, K, M, N, P, and S
• Right-hand external UN thread profile at 13 TPI
• 16ERM insert style, 3/8-inch inscribed circle, 0.143 inches thick
• M chipbreaker geometry for controlled chip evacuation during threading passes
• Conforms to ISO 13399 cutting tool data standards

Compatibility

Designed for use in ISCARTHREAD series toolholders accepting 16ERM-style laydown threading inserts with a 3/8-inch inscribed circle. Verify toolholder pocket specifications before ordering.

Installation Notes

Installation should be performed by a qualified machinist with the machine fully stopped, spindle locked, and all energy sources isolated before changing inserts. Use the appropriate torx or clamping screw driver specified for the toolholder to secure the insert without overtightening. Inspect the toolholder pocket for wear or debris before seating the new insert. Handle carbide inserts carefully to avoid chipping the cutting edge prior to use.