Kennametal 1690880 Threading Insert Iso 1.50mm Pitch KC5025

Product Description

The KENNAMETAL 1690880 is a solid carbide laydown threading insert designed for external ISO threading operations on CNC lathes and turning centers. Manufactured to the LT16ER15ISOCB specification in grade KC5025, it features a TiAlN coating applied via PVD process, delivering heat resistance and extended tool life in a wide range of workpiece materials. The insert has a 3/8 inch (9.53 mm) inscribed circle, a thickness of 0.1430 inches (3.44 mm), and is configured for right-hand cutting. The CB chipbreaker geometry supports efficient chip control during threading passes.

This insert is suited for external ISO metric threading applications with a 1.50 mm pitch. Typical use is in production turning environments where consistent thread form and surface finish are required on steel, stainless, and similar ferrous materials. It is installed by machinists and CNC operators in job shops, production facilities, and maintenance machining environments. The KC5025 grade is a PVD-coated carbide grade commonly selected for interrupted cuts and threading applications requiring edge toughness.

Key Features

• Solid carbide construction in KENNAMETAL KC5025 grade for toughness and wear resistance
• TiAlN PVD coating for elevated heat resistance and extended insert life
• Right-hand external ISO thread form at 1.50 mm pitch
• CB chipbreaker geometry for controlled chip evacuation during threading
• 3/8 inch inscribed circle with 3.94 mm hole diameter for positive seating in compatible toolholders
• Laydown-style insert geometry for rigid, low-profile clamping

Compatibility

Designed for use in LT16 series laydown threading toolholders accepting a 3/8 inch inscribed circle insert with a 3.94 mm mounting hole. Confirm toolholder designation and insert pocket geometry before installation.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator with the machine in a full lockout/tagout state before insert indexing or replacement. Use the appropriate torx or hex key to the toolholder manufacturer's specified procedure when seating the insert. Inspect the insert pocket and clamping components for wear or debris before securing the new insert. Never exceed the cutting parameter ranges published in the toolholder and insert manufacturer documentation.