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The KENNAMETAL 1712607 is a laydown threading insert designed for external UN thread cutting on CNC lathes and turning centers. Manufactured from solid carbide in grade KC5010 with a PVD-applied TiAlN coating, this insert delivers consistent thread form geometry on demanding materials. It is configured as a right-hand external insert with an ER style and CB chipbreaker, cutting at 24 threads per inch to the UN thread standard. The 3/8-inch (9.53 mm) inscribed circle and 0.143-inch thickness fit standard LT16 toolholders. Machining professionals and CNC operators install this insert during production threading of external fastener features and threaded connections.
This insert is suited for threading steel, stainless steel, cast iron, superalloys, and titanium. The KC5010 PVD carbide grade is engineered for interrupted cuts and difficult-to-machine alloys where edge toughness and coating adhesion matter. Typical applications include external threading of hydraulic fittings, pipe nipples, fasteners, and precision mechanical components in job shop and production environments. The CB chipbreaker geometry helps manage chip flow during threading passes at standard UN pitches.
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 0.394-inch hole diameter.
Installation is performed by qualified CNC machinists or toolroom technicians. Power down and de-energize the machine tool before seating or indexing inserts. Use the correct torx or hex key torque driver as specified by the toolholder manufacturer for the LT16 pocket - do not overtighten by hand. Verify thread form and pitch with a thread gauge on the first part before running production quantities.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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