Carmex 16ER27NPTFBXC Threading Insert 27 Tpi Nptf Carbide

Product Description

The CARMEX 16ER27NPTFBXC is a solid carbide laydown threading insert designed for external NPTF thread cutting at 27 threads per inch. It carries a TiN (titanium nitride) PVD coating in manufacturer grade BXC, which extends cutting edge life on ferrous and non-ferrous materials. The insert features a 3/8-inch inscribed circle and a thickness of 0.146 inches. It is intended for use in CNC lathes and threading toolholders equipped to accept the 16 ER insert style. Right-hand cutting geometry suits standard external tapered pipe thread applications where pressure-tight NPTF form is required.

This insert is suited for machining external NPTF tapered pipe threads at 27 TPI, a pitch commonly associated with smaller-diameter pipe fittings. Typical applications include threading operations on ferrous metals, stainless steel, and other materials in production or job-shop environments. The solid carbide substrate provides rigidity and thermal resistance at higher cutting speeds compared to high-speed steel alternatives. Machinists and CNC operators in industrial, manufacturing, and fluid system component shops will find this insert applicable to precision threading work where NPTF thread form integrity is critical.

Key Features

• Solid carbide substrate for rigidity and heat resistance during high-speed threading
• TiN coating applied via PVD process for improved wear resistance and edge retention
• 27 TPI external NPTF thread form for pressure-tight tapered pipe thread cutting
• Right-hand cutting geometry in the 16 ER insert style
• 3/8-inch inscribed circle with 0.146-inch thickness for standard toolholder compatibility
• Manufacturer grade BXC designation for controlled geometry and coating specification

Compatibility

Designed as a replacement or production-supply insert for CNC threading toolholders accepting the 16 ER laydown insert style with NPTF external thread geometry at 27 TPI.

Installation Notes

Installation is performed by qualified machinists or CNC operators following standard insert seating procedures for laydown-style threading toolholders. Power down and lock out the machine spindle before changing inserts. Seat the insert fully against the toolholder pocket and torque the clamp screw to the toolholder manufacturer's specification. Verify thread form with a calibrated NPTF gauge after the first threading pass before committing to a production run.