Carmex 16IR11.5NPTMXC/G Threading Insert Npt 11.5 Tpi

Product Description

The CARMEX 16IR11.5NPTMXC/G is a solid carbide laydown threading insert designed for cutting right-hand internal NPT threads. It carries a TiN (titanium nitride) finish that helps extend cutting life and reduce friction during the threading operation. The insert produces threads at 11.5 TPI, matching the standard NPT thread pitch used across pipe and fitting applications. With a 3/8-inch inscribed circle and a thickness of 0.146 inches, this insert seats into compatible laydown-style toolholders used on CNC lathes and manual threading equipment. It is sold individually with a minimum order quantity of 50 pieces.

This insert is suited for internal NPT threading operations in production and job-shop environments. The NPT 11.5 TPI profile makes it a direct fit for threading standard pipe-size bores where a tapered thread form is required. Machinists working in metalworking, fluid-system component manufacturing, and industrial fitting production will find this insert applicable to a range of ferrous and non-ferrous materials where TiN-coated carbide tooling performs reliably.

Key Features

• Solid carbide substrate with TiN finish for extended tool life
• Right-hand internal NPT thread form at 11.5 TPI
• 3/8-inch inscribed circle for laydown-style toolholder compatibility
• 0.146-inch insert thickness for stable seating and accurate thread profile
• Laydown orientation simplifies indexing and insert changeover
• Sold per piece with a minimum order quantity of 50

Compatibility

Designed as a replacement-style laydown threading insert for CNC and manual lathes equipped with 16IR-series internal threading toolholders that accept a 3/8-inch inscribed circle insert.

Installation Notes

Installation is performed by qualified machinists or tooling technicians. Ensure the machine is powered down and the spindle is fully stopped before indexing or replacing inserts. Use the appropriate torx or clamp screw specified by the toolholder manufacturer to secure the insert - do not overtighten by hand estimation alone. Confirm thread profile and pitch with a thread gauge on the first test piece before running production.