Kennametal 1712604 Threading Insert 18 Tpi Solid Carbide

Product Description

The KENNAMETAL 1712604 is a solid carbide laydown threading insert designed for external UN thread cutting at 18 threads per inch (TPI). Carrying the ISO code LT16ER18UNCB, this insert features an ER-style profile, a KC5025 manufacturer grade, and a PVD-applied TiAlN coating that supports extended tool life in demanding cutting environments. With a 3/8 inch inscribed circle and a thickness of 0.1430 inches (3.44 mm), it delivers consistent thread geometry on right-hand external applications. Machinists and CNC programmers working in production threading operations specify this insert for its tight tolerances and reliable coating adhesion on challenging workpiece materials.

This insert is intended for right-hand external UN threading on materials including steel, stainless steel, cast iron, superalloys, and titanium. It is well suited for CNC lathes and turning centers where repeatable thread form accuracy is required. The CB chipbreaker geometry helps manage chip flow during threading passes, reducing the risk of chip interference in the cut zone. Typical applications include threaded component manufacturing in aerospace, energy, and general industrial machining where material hardness and thermal resistance are primary concerns.

Key Features

• Solid carbide construction with PVD TiAlN coating for thermal and wear resistance
• ER insert style with CB chipbreaker for controlled chip evacuation
• 18 TPI right-hand external UN thread form
• KC5025 grade optimized for steel, stainless steel, cast iron, superalloys, and titanium
• 3/8 inch inscribed circle with 0.1430 inch thickness for consistent seating
• Hole diameter of 0.1551 inches (3.94 mm) for standard insert clamping

Compatibility

Designed as an OEM-style replacement and standard-fit threading insert for toolholders accepting LT16-style laydown threading inserts with ER geometry.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Always index or replace inserts with the machine in a safe, powered-down or locked-out state per facility lockout/tagout procedures. Seat the insert fully against the pocket locating surfaces before tightening the clamping screw to the toolholder manufacturer specification. Inspect the insert pocket for chips or debris before seating to avoid insert rocking or premature edge failure.