Seco 00064715 Laydown Threading Insert 20 Tpi Un Carbide

Product Description

The SECO 00064715 is a 16NR-style laydown threading insert designed for right-hand internal UN thread cutting at 20 threads per inch. Built from solid carbide in the CP500 grade, this insert features a PVD-applied TiAlN/TiN coating that extends cutting life across a wide range of workpiece materials. The 3/8-inch inscribed circle and 0.1366-inch thickness conform to standard laydown insert geometry, allowing drop-in replacement in compatible toolholders. Part of the Snap-Tap series, it carries an ISO-standard 60-degree included angle and is suited for threading operations on CNC lathes and manual machines where consistent thread form is required.

This insert is used for cutting internal UN threads in a right-hand direction, making it applicable to threading bores on production and job-shop turning equipment. The CP500 grade with PVD coating performs across universal workpiece material categories including ferrous, non-ferrous, stainless, and superalloy materials, as classified under material codes K, M, N, P, and S. It is a common choice for machinists and toolroom professionals working to UN thread standards in both prototype and high-volume runs.

Key Features

• 16NR insert style with 60-degree included angle for UN thread profile
• CP500 solid carbide grade with PVD TiAlN/TiN coating for extended tool life
• Right-hand cut, internal thread orientation at 20 TPI
• 3/8-inch inscribed circle for standard laydown toolholder compatibility
• 0.0040-inch corner radius for controlled thread root geometry
• Rated for universal workpiece materials: K, M, N, P, and S categories

Compatibility

Designed as a laydown-style threading insert for use in 16NR-compatible internal threading toolholders conforming to ISO standards. Minimum order quantity is 2 inserts; package quantity is 1.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician with the machine powered down and spindle locked before insert indexing or replacement. Seat the insert fully in the toolholder pocket and torque the clamping screw to the toolholder manufacturer's specification using a calibrated torque driver. Inspect the insert pocket for chips or debris before seating. Verify thread form with a thread gauge after the first pass before committing to full-depth cuts.