Carmex 16ER18UNBXC Threading Insert 18 Tpi 3/8 Inch Ic

Product Description

The CARMEX 16ER18UNBXC is a solid carbide laydown threading insert designed for external UN thread turning applications. It cuts at 18 threads per inch with a 60-degree included angle, making it suited for unified national thread forms on a wide range of workpiece materials. The insert measures 3/8 inches inscribed circle and 0.146 inches thick. A PVD-applied TiN coating improves wear resistance and extends tool life in production threading operations. Licensed machinists and CNC turning operators will find this insert appropriate for both ferrous and non-ferrous threading work.

This insert is intended for right-hand external thread turning on CNC lathes and manual turning centers. The 16 ER style laydown geometry seats securely in compatible ER-style toolholders. The universal primary workpiece material rating covers a broad spectrum of materials including steel, stainless, cast iron, aluminum, and exotic alloys, making this insert a practical choice for job shops and production environments running varied material types.

Key Features

• Solid carbide substrate for rigidity and thermal stability in threading cuts
• PVD TiN coating applied for improved wear resistance and surface finish on threaded profiles
• 18 TPI cutting geometry with 60-degree included angle for UN thread forms
• Right-hand external thread orientation for standard OD threading applications
• 3/8 inch inscribed circle with 0.146 inch thickness in the 16 ER laydown style
• Universal material compatibility rating covering steel, stainless, cast iron, aluminum, and exotic alloys

Compatibility

Designed for use in ER-style external threading toolholders accepting 16 ER laydown inserts. Suitable for producing external UN thread forms at 18 TPI across a broad range of workpiece materials.

Installation Notes

This insert is installed by qualified machinists or CNC tooling technicians. Ensure the machine spindle is fully stopped and the toolholder is clear of the workpiece before seating or replacing the insert. Use the appropriate torque wrench and insert screw specified by the toolholder manufacturer to secure the insert without cracking the carbide. Verify thread pitch and insert orientation against the job drawing before beginning the threading pass.