Seco 00064716 Threading Insert 20 Tpi 3/8 Ic Un CP500

Product Description

The SECO 00064716 is a laydown threading insert designed for right-hand internal UN thread cutting at 20 threads per inch (TPI). Built from solid carbide micrograin substrate in the CP500 grade, it carries a PVD-applied TiAlN/TiN coating for extended tool life when threading cast iron, stainless steel, and carbon steel. The insert features a 16NR style with a 3/8 inch inscribed circle and a nominal thickness of 0.1366 inches. It belongs to the Snap Tap series and is suited for CNC turning centers and lathes where precise, repeatable thread forms are required. Installation and toolpath setup is handled by machinists and CNC operators on the shop floor.

This insert is intended for internal UN threading operations on a range of workpiece materials including cast iron (ISO K), stainless steel (ISO M), and steel (ISO P). The A1 chipbreaker geometry is selected for controlled chip flow during threading passes. The 60-degree included angle matches the standard UN thread form. Typical applications include threading bores in production machining environments where consistent thread quality across high-volume runs is a priority.

Key Features

• Solid carbide micrograin substrate in CP500 grade for hardness and wear resistance
• PVD TiAlN/TiN coating extends cutting life across multiple workpiece material groups
• 20 TPI, 60-degree included angle for standard UN internal thread form
• A1 chipbreaker geometry for controlled chip evacuation during threading passes
• Right-hand cutting orientation with 3/8 inch inscribed circle and 0.1366 inch thickness
• ISO-standard insert geometry for use in compatible 16NR toolholders

Compatibility

Designed for use in 16NR-style toolholders compatible with the Snap Tap series. Suitable for right-hand internal UN threading operations on cast iron, stainless steel, and steel workpieces per ISO material groups K, M, and P.

Installation Notes

This insert is installed and replaced by qualified machinists or CNC tooling technicians. Power down and lock out the machine spindle before seating or removing inserts. Use the appropriate torx or clamping key specified for the toolholder to secure the insert without over-torquing the clamping screw. Verify insert seating and thread form with a thread gauge after the first pass before committing to a full production run.