Seco 00064425 Threading Insert 14 Tpi Un CP500 Carbide

Product Description

The SECO 00064425 is a laydown threading insert engineered for internal UN thread cutting at 14 threads per inch. Manufactured from solid carbide in the CP500 grade, it features a PVD-applied TiAlN/TiN finish that extends tool life across a broad range of workpiece materials. The insert follows the 16NR style designation with a right-hand cutting orientation and a 60-degree included angle standard to unified thread profiles. With a 3/8-inch inscribed circle and a thickness of 0.1366 inches, it fits compatible laydown threading toolholders used in CNC turning and thread-chasing operations. Installation is performed by machinists and CNC lathe operators in production and job-shop environments.

This insert is suited for internal threading applications on materials spanning cast iron, non-ferrous alloys, steel, and high-temperature alloys, consistent with its K, M, N, P, and S workpiece material codes. The Snap-Tap series design seats securely in matched laydown-style pockets, supporting repeatable thread form accuracy on through-bored and blind-hole features. It is a practical choice for shops producing UN-standard threaded components in moderate to high production volumes where consistent tool changeover and insert indexability are priorities.

Key Features

• CP500 solid carbide grade with PVD TiAlN/TiN coating for extended wear resistance
• 14 TPI right-hand internal UN thread profile with 60-degree included angle
• 3/8-inch inscribed circle fits standard 16NR laydown toolholder pockets
• Snap-Tap series design for reliable seating and repeatable thread form
• Universal workpiece material compatibility: cast iron, steel, non-ferrous, and high-temp alloys (K, M, N, P, S codes)
• ISO-standard geometry; 0.0060-inch corner radius for accurate thread root form

Compatibility

Designed for use in 16NR-style laydown threading toolholders. Compatible workpiece material codes are K, M, N, P, and S per ISO classification. Confirm pocket geometry and clamping style match the 16NR insert form before installation.

Installation Notes

Insert replacement and seating should be performed by a qualified machinist or CNC operator with the spindle stopped and the machine in a safe, locked-out state. Use the manufacturer-specified torque wrench or clamping key for the toolholder to seat the insert without rocking or side-loading the pocket. Inspect the insert pocket for chips or wear before seating a new insert, as debris can affect thread form accuracy. Do not use damaged or chipped inserts; discard and replace per your shop's tooling protocol.