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The SECO 00049845 is a laydown-style threading insert designed for right-hand external UN thread cutting at 16 threads per inch. Built from micrograin solid carbide in the CP500 grade, it carries a PVD-applied TiAlN/TiN coating that extends cutting edge life across a wide range of workpiece materials. The 16ER insert style seats securely in compatible toolholders, providing a stable, repeatable platform for threading operations on CNC lathes and turning centers. With a 60-degree included angle, it is geometry-matched to standard UN thread forms. Machinists and CNC operators working in job shop, production, and maintenance machining environments rely on this insert for consistent thread quality.
This insert is suited for external UN threading applications in residential, commercial, and industrial machining contexts. The CP500 grade with PVD coating supports use on a broad spectrum of workpiece materials, including cast iron, non-ferrous metals, steel, stainless steel, and high-temperature alloys, as indicated by material codes K, M, N, P, and S. It is part of the SECO Snap Tap series and conforms to ISO standards for indexable threading inserts. The 3/8 inch inscribed circle size fits toolholders designed for that IC class.
Designed as a laydown threading insert for toolholders accepting the 16ER insert style with a 3/8 inch inscribed circle, conforming to ISO standards for indexable threading inserts in the Snap Tap series.
Installation should be performed by a qualified machinist or CNC operator with the machine powered down and locked out before any insert change. Seat the insert fully in the toolholder pocket and torque the clamping screw according to the toolholder manufacturer specifications. Verify insert orientation and thread form angle before resuming cutting operations. Handle carbide inserts carefully to avoid chipping the cutting edge prior to use.
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