Seco 00050055 Threading Insert 9 Tpi Un External

Product Description

The SECO 00050055 is a laydown threading insert designed for external UN thread cutting at 9 threads per inch (TPI). Built from solid carbide micrograin stock and finished with a PVD-applied TiAlN/TiN coating, this insert delivers consistent thread form geometry on a broad range of workpiece materials. It belongs to the Snap Tap series and carries a 60-degree included angle for standard UN profile work. Machinists and CNC turning specialists use this insert on lathes and turning centers where repeatable thread quality and insert-to-insert consistency are required. The CP500 grade designation indicates the manufacturer-assigned substrate and coating combination suited for the workpiece material range listed below.

This insert is intended for right-hand external threading operations following UN thread standards. The CP500 grade with PVD TiAlN/TiN coating makes it suitable for universal primary workpiece materials, including cast iron, non-ferrous metals, non-metallic materials, steel, and high-temperature alloys, as indicated by material grade codes K, M, N, P, and S. It is well-suited for production turning environments where consistent thread form and long edge life are priorities. Sold individually, with a minimum order quantity of 2 units.

Key Features

• Solid carbide micrograin substrate for rigidity and wear resistance
• PVD TiAlN/TiN coating improves edge life across a wide material range
• 60-degree included angle produces standard UN thread form
• Right-hand external threading geometry, 9 TPI
• 3/8 inch inscribed circle (0.3750 inches) for common toolholder compatibility
• ISO standards compliance for predictable insert fitment

Compatibility

Designed as a laydown-style threading insert for toolholders accepting the 16ER insert style with a 3/8 inch inscribed circle. Compatible with workpiece material grades K, M, N, P, and S per the manufacturer's universal material classification. Confirm toolholder seat geometry and clamping style before installing.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Ensure the machine spindle is fully stopped and the toolholder is secured in the turret before seating or replacing the insert. Use the correct torque driver for the clamping screw to avoid seat damage — refer to the toolholder manufacturer's specification for clamping torque. Inspect the insert pocket and seating surface for chips or debris before each insert change.