Seco 00077959 Threading Insert Solid Carbide 48-16 Tpi

Product Description

The SECO 00077959 is a laydown threading insert designed for internal threading operations on CNC lathes and turning centers. Built from micrograin solid carbide with a PVD-applied TiAlN/TiN coating in the CP500 grade, this insert delivers consistent thread form and edge life across a broad range of workpiece materials. It produces a partial profile 60-degree included angle thread, covering 48 to 16 TPI (0.50 to 1.50 mm pitch), making it suitable for a wide span of common unified and metric-equivalent thread sizes. The insert features a right-hand cutting orientation and an A2 chipbreaker geometry. Thickness is 0.1181 inches. Installed by machinists and CNC operators in production and job-shop environments.

This insert is used in internal threading applications on materials classified under ISO material groups K, M, P, and S, covering cast irons, stainless steels, steels, and high-temperature alloys. It fits the SECO Snap Tap insert system and is suited for both light production runs and high-volume threading cycles where consistent thread quality is required. Typical applications include threading bores in hydraulic components, fittings, and structural hardware across industrial and OEM manufacturing environments.

Key Features

• Micrograin solid carbide substrate with CP500 manufacturer grade for wear resistance
• PVD TiAlN/TiN coating for extended edge life and reduced built-up edge
• 60-degree partial profile covers 48-16 TPI (0.50 to 1.50 mm pitch) in a single insert
• Right-hand internal cutting orientation with A2 chipbreaker
• 1/4 inch (0.2500 inch) inscribed circle with 0.0030 inch corner radius
• ISO-standard insert geometry compatible with the Snap Tap toolholder series

Compatibility

Designed for use in SECO Snap Tap series toolholders accepting the 11NR insert style. ISO-standard geometry. Compatible with workpiece materials in ISO groups K, M, P, and S.

Installation Notes

Installation is performed by qualified machinists or CNC operators. Power down and lock out the machine spindle before changing inserts. Seat the insert fully and evenly in the toolholder pocket and secure the clamping screw to the toolholder manufacturer's specified torque using a calibrated torque driver. Inspect the cutting edge and seat for chips or debris before each use; a damaged seat will compromise thread accuracy.