Carmex 16ER12UNBXC Threading Insert 12 Tpi Solid Carbide

Product Description

The CARMEX 16ER12UNBXC is a solid carbide laydown threading insert designed for external UN thread cutting on CNC lathes and threading operations. It operates at 12 threads per inch (TPI) with a 60-degree included angle, conforming to UN thread standards. The insert features a PVD-applied TiN coating for extended tool life and wear resistance across a broad range of workpiece materials. With an inscribed circle of 0.375 inches and a thickness of 0.146 inches, the 16ER12UNBXC fits standard 16ER toolholders. This insert is installed by machinists and CNC operators performing right-hand external threading on production or repair jobs.

The 16ER12UNBXC is suited for right-hand external UN threading at 12 TPI across a wide variety of materials, including steel, stainless steel, cast iron, aluminum, non-ferrous metals, and high-temperature alloys. Its universal workpiece material rating covers material codes H, K, M, N, P, and S, making it a versatile choice for job shops and production environments running mixed-material threading programs. It is particularly effective in applications where consistent thread form and insert-to-insert repeatability are required.

Key Features

• Solid carbide construction with PVD TiN coating for wear resistance and longer tool life
• 12 TPI, 60-degree included angle for standard UN external thread profiles
• Right-hand cutting geometry for conventional external threading operations
• Inscribed circle of 0.375 inches fits 16ER-style toolholders
• Universal material compatibility across steel, stainless, aluminum, cast iron, and superalloys
• Manufactured to CE, ISO 13485:2016, ISO 14001:2015, and ISO 45001 standards

Compatibility

Designed for use in 16ER-style laydown threading insert toolholders for right-hand external UN threading at 12 TPI. Compatible with workpiece material codes H, K, M, N, P, and S as designated by the manufacturer.

Installation Notes

Installation is performed by qualified machinists or CNC operators. Power down and lock out the machine spindle before seating or replacing the insert. Use the correct torque wrench and manufacturer-recommended clamping hardware for the 16ER toolholder to ensure proper insert seating. Inspect the insert pocket and clamping screw for damage before each insert change to prevent premature failure or thread-form error.