Seco 00085906 Laydown Threading Insert 16 Tpi Un CP500

Product Description

The SECO 00085906 is a laydown threading insert designed for internal UN thread cutting at 16 threads per inch. Built from micrograin solid carbide with a TiAlN/TiN PVD coating under the CP500 grade designation, this insert delivers consistent thread form geometry on a wide range of workpiece materials. The 60-degree included angle produces a standard UN thread profile, and the TT chipbreaker controls chip flow during internal threading operations. At 0.3750 inches inscribed circle and 0.1366 inches thick, the insert seats securely in compatible Snap Tap style toolholders. Machinists and toolroom technicians use this insert in CNC lathes and manual threading operations where repeatable thread quality is required.

This insert is suited for internal right-hand UN threading on materials classified under ISO workpiece material codes K, M, P, and S, making it applicable across steel, stainless steel, cast iron, and high-temperature alloys. The CP500 grade with PVD coating is optimized for a universal material range, giving shop floors flexibility without frequent grade changes. It is a practical choice for production threading of nuts, threaded bores, and internally threaded components in precision machining environments.

Key Features

• Micrograin solid carbide construction for wear resistance and edge stability
• TiAlN/TiN PVD coating under CP500 grade for universal material compatibility
• 16 TPI UN thread standard with 60-degree included angle
• Right-hand internal thread cutting configuration
• TT chipbreaker for controlled chip evacuation in bored threading applications
• Snap Tap series — indexes into compatible laydown threading toolholders

Compatibility

Designed for use in Snap Tap series laydown threading toolholders that accept a 3/8 inch inscribed circle insert. Compatible with right-hand internal threading applications conforming to UN thread standards.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Before indexing or replacing the insert, ensure the machine spindle is fully stopped and the toolholder is secured. Seat the insert fully against the toolholder pocket and torque the clamping screw according to the toolholder manufacturer's specifications. Verify thread profile with a thread gauge after the first pass before continuing production runs.