Carmex 16ER8NPTC5/P30 Threading Insert 8 Tpi Npt Carbide

Product Description

The CARMEX 16ER8NPTC5/P30 is a solid carbide laydown threading insert designed for cutting external NPT (National Pipe Taper) threads on CNC lathes and turning centers. It operates at 8 threads per inch and features a 3/8-inch (0.375 inches) inscribed circle with a thickness of 0.146 inches. The uncoated C5/P30 carbide grade offers consistent cutting performance on steel and general-purpose workpiece materials. This insert suits machinists and tooling technicians producing pipe fittings, hydraulic connectors, and threaded pipe ends that require precise NPT taper thread profiles. Right-hand cutting orientation is standard for conventional thread turning operations.

This insert is used in production and job-shop turning applications where NPT pipe threads are required on external workpiece diameters. Common applications include fabrication of threaded pipe nipples, hydraulic and pneumatic fittings, and fluid-system connectors across industrial, oilfield, and general machining environments. The 16 ER insert style fits compatible laydown threading toolholders designed for the ER insert geometry. Minimum order quantity is 10 pieces; packaging quantity is 1 per pack.

Key Features

• Solid carbide construction in C5/P30 grade for general-purpose steel threading
• 8 TPI thread pitch for standard NPT pipe thread profiles
• 3/8-inch inscribed circle (0.375 inches) for use in compatible 16 ER toolholders
• Uncoated finish - suitable for applications where coating is not required or preferred
• Right-hand external cut orientation for standard lathe threading passes
• Laydown (16 ER) insert style for precise seating and repeatable thread form

Compatibility

Designed for use in laydown threading toolholders accepting the 16 ER insert style. Intended for external NPT thread turning operations on CNC and manual lathes.

Installation Notes

Installation is performed by qualified machinists or tooling technicians. Power down and lock out the machine spindle before seating or replacing inserts. Ensure the toolholder pocket and clamping screw are clean and free of chips before installing the insert. Follow the toolholder manufacturer's torque guidance for the clamping screw to avoid insert movement or fracture during cutting.