Seco 00064744 Threading Insert 8 Tpi 3/8 in Ic CP500

Product Description

The SECO 00064744 is a laydown-style threading insert engineered for right-hand internal UN thread cutting at 8 threads per inch (TPI). Built from solid carbide in the CP500 grade and finished with a PVD-applied TiAlN/TiN coating, this insert delivers consistent thread geometry and wear resistance across a broad range of workpiece materials. It carries a 60-degree included angle, an inscribed circle of 3/8 inches, and a thickness of 0.1366 inches. Part of the Snap-Tap series, it is designed for use in laydown-style threading toolholders on CNC lathes and turning centers operated by machinists and tool-room technicians.

This insert is suited for internal UN thread applications on both production and job-shop turning equipment. The Universal primary workpiece material rating covers a wide spectrum of material families including cast iron, stainless steel, non-ferrous alloys, high-temperature alloys, and general steels, making it adaptable across diverse machining operations. The 8 TPI designation targets coarser thread forms commonly found in fastener, coupling, and fitting applications machined from a range of materials.

Key Features

• Solid carbide CP500 grade with PVD TiAlN/TiN coating for extended tool life
• 8 TPI right-hand internal UN thread profile with 60-degree included angle
• 3/8-inch inscribed circle for compatibility with standard laydown toolholders
• 0.1366-inch insert thickness for secure seating in the pocket
• Corner radius of 0.010 inches for controlled thread root geometry
• ISO-standard Snap-Tap series insert for repeatable indexing

Compatibility

Designed for use in laydown-style threading toolholders that accept 16NR-style inserts with a 3/8-inch inscribed circle, as specified within the Snap-Tap series platform.

Installation Notes

Installation should be performed by a qualified machinist following the toolholder manufacturer's seating and torque procedures for laydown insert pockets. Ensure the machine spindle is fully stopped and the turret is locked before indexing or replacing inserts. Inspect the insert pocket and clamping screw for wear or debris prior to seating the new insert. Follow applicable shop safety protocols and use appropriate chip and coolant management for the workpiece material being threaded.