Kennametal 1690879 Threading Insert Iso 1.50mm Carbide

Product Description

The KENNAMETAL 1690879 is a solid carbide laydown threading insert designed for external ISO thread cutting operations. Coated with TiAlN via a PVD process, this insert delivers wear resistance and thermal stability in demanding threading applications. It carries the KC5010 manufacturer grade and features a chipbreaker (CB) geometry that helps manage chip flow during continuous threading passes. With a 1.50mm pitch and a 3/8-inch (9.53mm) inscribed circle, it is sized for standard laydown toolholders in the ER16 insert style family. Installation is performed by machinists and CNC tooling technicians on lathes and turning centers.

This insert is intended for right-hand external threading to ISO thread standards. It is suited for threading operations on ferrous and non-ferrous materials in both production and jobbing environments. The 1.50mm pitch makes it appropriate for metric fastener thread profiles commonly encountered in automotive, aerospace, and general industrial turning work. The CB chipbreaker geometry aids in chip control across a range of materials and cutting conditions.

Key Features

• Solid carbide substrate with TiAlN PVD coating for wear and heat resistance
• KC5010 grade optimized for external ISO threading applications
• Right-hand cutting orientation for standard external thread direction
• 1.50mm pitch for metric ISO thread profiles
• CB chipbreaker geometry for controlled chip evacuation
• 3/8-inch (9.53mm) inscribed circle fits ER16-style laydown toolholders

Compatibility

Designed for use in ER16-style laydown threading toolholders accepting a 3/8-inch inscribed circle insert with a 0.1551-inch hole diameter. Intended for right-hand external ISO thread turning applications.

Installation Notes

This insert is installed and replaced by machinists or CNC tooling technicians during toolholder setup or insert indexing. Power down and lock out the machine spindle before handling inserts or toolholders. Seat the insert fully and confirm clamping torque per the toolholder manufacturer specification before running. Inspect the insert seating pocket for chips or debris that could affect insert position and thread accuracy.