Carmex 16IR14UNC5/P30 Threading Insert 14 Tpi Carbide

Product Description

The CARMEX 16IR14UNC5/P30 is a solid carbide laydown threading insert designed for internal UN thread cutting at 14 threads per inch (TPI). Manufactured to a P30 carbide grade with a bright uncoated finish, this insert delivers reliable thread form accuracy on a wide range of workpiece materials. The 60-degree included angle conforms to Unified National thread standards, and the right-hand cutting geometry suits standard internal threading operations. With a 3/8-inch inscribed circle and a thickness of 0.146 inches, it fits toolholders sized for 16IR-style indexable inserts. Licensed machinists and CNC lathe operators use this insert for producing precise internal UN threads in production and job-shop environments.

This insert is suited for internal threading on lathes and turning centers where a laydown-style seat is required. The P30 grade and uncoated surface make it a versatile choice across multiple material classes, including steel, stainless, cast iron, non-ferrous alloys, and high-temperature alloys. Its universal primary workpiece material rating means it can handle a broad range of threading jobs without requiring a specialized coated variant for general-purpose work.

Key Features

• Solid carbide P30 grade construction for general-purpose internal threading durability
• 14 TPI Unified National (UN) thread form with 60-degree included angle
• Right-hand cutting geometry for standard internal thread applications
• Bright uncoated finish suitable for universal workpiece material compatibility
• 3/8-inch inscribed circle with 0.146-inch thickness for 16IR-style toolholders
• Certified to CE, ISO 13485:2016, ISO 14001:2015, and ISO 45001 standards

Compatibility

Designed as an OEM-style replacement or production-use insert for 16IR-style laydown threading toolholders used in internal UN thread applications on CNC lathes and manual turning equipment.

Installation Notes

Installation of indexable threading inserts is performed by qualified machinists or CNC tooling technicians. Ensure the machine spindle is fully stopped and locked out before seating or replacing inserts. Use the appropriate torx or hex key specified by the toolholder manufacturer to secure the insert clamp to the correct seating torque. Verify insert orientation and thread hand before commencing any threading cycle.