Carmex 16IR16ABUTMXC Threading Insert 16 Tpi 3/8 in Ic

Product Description

The CARMEX 16IR16ABUTMXC is a solid carbide laydown threading insert designed for right-hand internal American Buttress thread cutting at 16 threads per inch (TPI). Manufactured from micrograin solid carbide with a PVD-applied TiN coating, this insert delivers consistent thread form and extended tool life in demanding machining environments. It features a 3/8 inch (0.3750 inch decimal) inscribed circle and a thickness of 0.1460 inches. The 45-degree included angle and 0-degree relief angle are matched to the American Buttress thread standard. This insert is installed by machinists and CNC tooling technicians working on turning centers and lathes.

This insert is suited for internal threading operations across a wide range of workpiece materials, including steel, stainless steel, cast iron, non-ferrous metals, high-temperature alloys, and other materials corresponding to material grade codes H, K, M, N, P, and S. The universal primary workpiece material rating makes it appropriate for job shops and production environments where material types vary between setups. Typical applications include threading bores and internal features requiring American Buttress thread profiles in both prototype and production runs.

Key Features

• Solid micrograin carbide substrate for rigidity and wear resistance in threading operations
• PVD TiN coating applied via physical vapor deposition for surface hardness and reduced friction
• Right-hand internal American Buttress thread form at 16 TPI
• 3/8 inch inscribed circle (0.3750 inches) with 0.1460 inch thickness for laydown insert seating
• 45-degree included angle, 0-degree relief angle per American Buttress thread standard
• Universal material grade rating compatible with H, K, M, N, P, and S workpiece material codes
• Manufactured to CE, ISO 13485:2016, ISO 14001:2015, and ISO 45001 standards

Compatibility

Designed for use in toolholders and boring bars accepting the 16IR insert style. Compatible with turning centers and CNC lathes configured for laydown threading inserts with a 3/8 inch inscribed circle.

Installation Notes

Installation and tool changes should be performed by qualified machinists with the machine in a full stop and lockout-tagout procedures applied per facility safety protocols. Use the appropriate torque wrench and insert screw recommended by the toolholder manufacturer to seat the insert correctly without overtightening. Inspect the insert pocket and clamping components for wear or debris before seating a new insert. Verify thread form and pitch with a thread gauge after the first pass before committing to a full production run.