Carmex 08IR18NPTFBMA Threading Insert 18 Tpi Npt Carbide

Product Description

The CARMEX 08IR18NPTFBMA is a laydown-style internal threading insert designed for cutting NPT (National Pipe Taper) threads on a lathe or CNC turning center. Built from solid carbide with a PVD coating, this insert delivers consistent thread form and edge life across a wide range of workpiece materials. It cuts 18 threads per inch with a 60-degree included angle, making it the correct geometry for standard NPT pipe thread profiles. Right-hand orientation suits the majority of standard turning setups. At 0.012 pounds, it is a compact, precision-ground insert intended for production threading operations performed by machinists and CNC operators.

This insert is suited for internal threading applications where NPT taper pipe threads are required. The universal workpiece material compatibility spans steel, stainless steel, cast iron, non-ferrous alloys, high-temperature alloys, and hardened materials, covering a broad range of industrial and mechanical piping components. It is commonly used in job shops and production environments where reliable, repeatable pipe thread geometry is critical to seal integrity and fitting standards.

Key Features

• Solid carbide construction for rigidity and wear resistance in threading operations
• PVD coating process extends edge life and reduces built-up edge across material types
• 18 TPI with 60-degree included angle matches NPT pipe thread form geometry
• Internal thread orientation for bore and pipe fitting applications
• Right-hand cutting direction for standard lathe and CNC turning setups
• Universal workpiece material rating covers steel, stainless, cast iron, non-ferrous, and high-temp alloys

Compatibility

Designed as an OEM-style replacement or production insert for lathes and CNC turning centers using standard laydown-style 08IR insert toolholders requiring 18 TPI NPT internal thread geometry.

Installation Notes

Installation is performed by qualified machinists or CNC operators. Power down and lock out the machine before seating or replacing the insert. Use the correct torx or hex key specified for the toolholder clamping screw and do not overtighten. Verify insert seating and thread form with a calibrated NPT thread gauge before returning the machine to production.