Seco 00046765 Threading Insert 8 Tpi 3/8 Inch Ic CP500

Product Description

The SECO 00046765 is a laydown-style indexable threading insert designed for external UN thread cutting operations. Built from solid carbide and finished with a PVD-applied TiAlN/TiN coating, this insert carries SECO grade CP500, which is rated for universal workpiece materials including steel, stainless, cast iron, non-ferrous alloys, and high-temp alloys. It cuts left-hand threads at 8 threads per inch (TPI) with a 60-degree included angle, making it a direct-fit solution for shops producing UN-standard external threads. The 3/8-inch inscribed circle (IC) and 0.1366-inch thickness match the 16EL insert style geometry. This insert is part of the Snap Tap series and suits CNC lathe and manual threading operations performed by machinists and toolroom technicians.

This insert is intended for external left-hand UN thread generation on CNC turning centers and engine lathes. The CP500 grade with PVD coating performs across a broad range of workpiece materials, including steel (P), stainless (M), cast iron (K), non-ferrous (N), and heat-resistant superalloys (S). At 8 TPI, it is suited for medium-pitch thread profiles in standard unified national thread applications. It fits toolholders designed for the 16EL insert style and is a single-insert package quantity.

Key Features

• Solid carbide construction with PVD TiAlN/TiN coating for wear resistance across multiple material groups
• CP500 manufacturer grade rated for universal workpiece materials: K, M, N, P, and S material codes per ISO classification
• Left-hand external UN thread form at 8 TPI with a 60-degree included angle
• 3/8-inch inscribed circle and 0.1366-inch thickness conform to 16EL insert style geometry
• Snap Tap series design for consistent seating and repeatable thread form in indexable toolholders
• ISO-compliant insert geometry suitable for multi-pass and single-pass threading cycles

Compatibility

Designed as an OEM-style indexable replacement insert for 16EL-style laydown threading toolholders used in external UN thread turning applications. Confirm toolholder pocket geometry and insert style code before installation.

Installation Notes

This insert is installed and replaced by machinists or toolroom technicians on CNC turning centers or manual lathes. Power down and lock out the machine before indexing or replacing the insert. Use the appropriate torque wrench and insert screw per the toolholder manufacturer specification to secure the insert without over-torquing the clamping screw. Inspect the toolholder pocket for wear or debris before seating the insert to ensure proper support and thread form accuracy.