Seco 00064721 Threading Insert 24 Tpi 3/8 Inch Ic

Product Description

The SECO 00064721 is a laydown threading insert designed for internal UN thread cutting at 24 threads per inch. Built from micrograin solid carbide in the CP500 grade, it features a TiAlN/TiN PVD coating that supports cutting across a wide range of workpiece materials. The right-hand configuration and 60-degree included angle make it suited to standard UN thread profiles. With a 3/8-inch inscribed circle and 0.1366-inch thickness, it fits toolholders designed for 16NR-style laydown inserts. Machinists and CNC operators in production and job-shop environments install this insert for precision internal threading operations.

This insert is applied in internal threading applications on CNC lathes and turning centers where UN-standard thread forms are required. The CP500 micrograin carbide grade and PVD coating support use on a universal range of workpiece materials, including ferrous, non-ferrous, stainless, and superalloy materials as indicated by material codes K, M, N, P, and S. It is part of the SECO Snap Tap series and is suited to both production threading and light-to-medium duty thread cutting on through-holes and blind-hole applications where right-hand internal threads are needed.

Key Features

• Micrograin solid carbide CP500 grade for wear resistance in threading applications
• TiAlN/TiN PVD coating supports extended tool life across universal workpiece materials
• 24 TPI UN internal thread form with 60-degree included angle
• Right-hand cut, 16NR laydown insert style for standard toolholder compatibility
• 3/8-inch inscribed circle with 0.0030-inch corner radius for thread root accuracy
• ISO-standard geometry in the SECO Snap Tap series

Compatibility

Designed for use in 16NR-style laydown threading toolholders that accept a 3/8-inch inscribed circle insert. Suitable for right-hand internal UN thread cutting at 24 TPI.

Installation Notes

Installation is performed by machinists or CNC tooling technicians. Ensure the machine spindle is fully stopped and the toolholder is secured before seating or replacing the insert. Verify the toolholder pocket and clamping screw are free of debris before installation to ensure proper insert seating. Follow the toolholder manufacturer's clamping torque guidance and confirm thread direction and TPI selection match the job requirement before initiating a cut.