Carmex 3/8IR11.5NPTP2 Threading Insert Npt 11.5 Tpi Carbide

Product Description

The CARMEX 3/8IR11.5NPTP2 is a laydown threading insert designed for cutting internal NPT threads on CNC lathes and threading machines. Manufactured from solid carbide in the P25C grade and finished with a PVD-applied TiN coating, this insert delivers consistent thread form and extended tool life on steel and similar materials. It features a right-hand cutting orientation, 11.5 threads per inch, a 3/8 inch inscribed circle, and a thickness of 0.146 inches. This insert is sized and profiled specifically for the NPT thread standard, making it a direct-fit choice for machinists producing pipe-threaded components.

This threading insert is suited for internal NPT thread production in job shop, production machining, and maintenance repair environments. Typical applications include cutting pipe threads in steel fittings, valve bodies, manifolds, and fluid-system components where tapered NPT thread forms are required. The right-hand internal configuration fits standard toolholders designed for 16IR-style laydown inserts. Machinists working on fluid handling, pneumatic, and hydraulic components will find this insert appropriate for their NPT threading operations.

Key Features

• Solid carbide P25C grade construction for strength and wear resistance on steel workpieces
• PVD-applied TiN coating reduces friction and extends cutting edge life
• Right-hand internal cutting orientation for standard internal NPT threading
• 11.5 TPI pitch matches the NPT thread standard for pipe connections
• 3/8 inch inscribed circle and 0.146 inch thickness for 16IR-style toolholder compatibility
• Laydown insert style provides secure, repeatable seating in the toolholder pocket

Compatibility

Designed for use in toolholders accepting 16IR-style laydown threading inserts for internal NPT thread applications.

Installation Notes

Installation should be performed by a qualified machinist familiar with CNC or manual lathe tooling. Power down and lock out the machine before seating or replacing the insert. Ensure the toolholder pocket is clean and free of debris before placing the insert to maintain proper seating and thread accuracy. Follow the toolholder manufacturer's clamping specifications when securing the insert.