Seco 00023503 Laydown Threading Insert 20 Tpi Un

Product Description

The SECO 00023503 is a solid carbide laydown threading insert designed for internal UN thread cutting at 20 threads per inch (TPI). Manufactured in the CP500 grade with a micrograin carbide substrate, this insert features a PVD-applied TiAlN/TiN coating for extended tool life across a wide range of workpiece materials. Part of the Snap Tap series, the 00023503 is built for right-hand internal threading operations and conforms to ISO standards. The 60-degree included angle matches standard UN thread geometry. Machinists and toolroom operators use this insert in CNC lathes and threading tool holders configured for laydown-style inserts.

This insert is suited for internal UN threading on universal workpiece materials, covering material codes K, M, N, P, and S — meaning it handles cast iron, stainless steel, non-ferrous metals, steel, and heat-resistant alloys in typical turning and threading setups. It is commonly installed in production and job-shop environments where consistent thread form and repeatable tool life are required. The 09NR insert style designation helps machinists quickly identify the correct tool holder pocket geometry for this application.

Key Features

• Solid carbide construction with micrograin substrate for rigidity and wear resistance
• PVD TiAlN/TiN coating for heat resistance and extended cutting life
• 20 TPI cutting geometry with 60-degree included angle for standard UN thread form
• Right-hand internal thread orientation, 09NR insert style
• ISO-standard geometry compatible with Snap Tap series tool holders
• Universal material grade — rated for K, M, N, P, and S workpiece material codes

Compatibility

Designed for use in tool holders accepting the 09NR laydown threading insert style. Suitable for right-hand internal UN threading operations at 20 TPI across universal workpiece material groups.

Installation Notes

This insert is installed and replaced by a qualified machinist or toolroom technician. Always power down and lock out the machine before seating or removing the insert. Ensure the tool holder pocket is clean and free of chips before indexing or replacing the insert. Follow the tool holder manufacturer's torque specifications for the clamping screw — do not overtighten, as solid carbide inserts are brittle and can fracture under excessive clamping force.