Kennametal 1712606 Threading Insert 20 Tpi Un Carbide KC5025

Product Description

The KENNAMETAL 1712606 is a solid carbide laydown threading insert designed for external UN thread forms at 20 threads per inch (TPI). Manufactured to ISO code LT16ER20UNCB, it carries a PVD-applied TiAlN coating and is graded KC5025, a grade engineered for threading operations on steel, stainless steel, cast iron, superalloys, and titanium. The insert features a 3/8 inch (9.53 mm) inscribed circle and measures 0.1430 inches (3.44 mm) thick. The ER insert style with CB chipbreaker geometry suits right-hand external threading on CNC lathes and turning centers. Machinists and CNC operators working in production or job-shop environments specify this insert for consistent thread quality on difficult-to-machine materials.

This insert is intended for external right-hand UN threading applications on CNC turning equipment. With a KC5025 PVD TiAlN-coated carbide grade, it performs across a broad range of workpiece materials including carbon steel, stainless steel, cast iron, superalloys, and titanium alloys. The 20 TPI designation makes it appropriate for threading operations requiring UN-standard thread forms in that pitch range. It is sold individually per package with a minimum order quantity of 10 units, making it suitable for toolroom stocking or production-run replenishment.

Key Features

• Solid carbide construction with PVD-applied TiAlN coating for extended tool life on hard and abrasive workpiece materials
• KC5025 grade provides a balance of toughness and wear resistance suited to interrupted cuts and variable stock conditions
• ER insert style with CB chipbreaker geometry supports right-hand external UN threading at 20 TPI
• 3/8 inch inscribed circle and 0.1430 inch thickness conform to standard LT16 insert-seat dimensions
• Hole diameter of 0.1551 inches (3.94 mm) for positive mechanical clamping in compatible toolholders
• Compatible workpiece materials span steel, stainless steel, cast iron, superalloys, and titanium

Compatibility

Designed as an OEM-style replacement or direct-fit insert for LT16-series laydown threading toolholders accepting ER-style inserts with a 3/8 inch inscribed circle and LT16 seat geometry. No specific toolholder model numbers were provided in the product data.

Installation Notes

Installation is performed by qualified CNC machinists or toolroom technicians. Ensure the machine spindle is locked and all motion is stopped before indexing or replacing inserts. Use the correct torque wrench and clamping screw specified by the toolholder manufacturer to seat the insert without cracking the carbide substrate. Inspect the insert pocket for chips or debris before seating a new insert, as contamination in the pocket can cause premature edge failure or poor thread form.