Carmex 11IR20UNP25C/G Laydown Threading Insert 20 Tpi

Product Description

The CARMEX 11IR20UNP25C/G is a solid carbide laydown threading insert designed for right-hand internal UN threading operations at 20 threads per inch (TPI). Coated with TiN via a PVD process, the insert carries a P25C manufacturer grade and a C5 material grade, making it well-suited for a broad range of workpiece materials. With an inscribed circle of 0.250 inches and a thickness of 0.127 inches, this 11IR-style insert mounts in standard laydown toolholders. Machinists and CNC operators in production turning environments are the primary installers of this insert.

This insert is intended for internal threading on lathes and turning centers where UN-standard thread forms at 60-degree included angle are required. The P25C grade and universal workpiece material rating make it applicable across steel, stainless, cast iron, non-ferrous, and high-temp alloy workpieces. It is sold individually with a minimum order quantity of 10 pieces, which aligns with typical toolroom replenishment and production lot purchasing practices.

Key Features

• Solid carbide substrate with PVD-applied TiN coating for extended tool life
• 11IR insert style with 20 TPI for UN internal thread standard
• 60-degree included angle for standard UN thread form
• 0.250 inch inscribed circle and 0.127 inch thickness for consistent seating in 11IR toolholders
• Universal workpiece material compatibility across material codes H, K, M, N, P, and S
• Meets CE, ISO 13485:2016, ISO 14001:2015, and ISO 45001 standards

Compatibility

Designed as a replacement or replenishment threading insert for standard 11IR-style laydown toolholders used in internal UN threading applications. Consult your toolholder manufacturer specifications to confirm seating and clamping compatibility before installation.

Installation Notes

Insert installation and indexing should be performed by a qualified machinist or CNC operator with the machine powered off and the spindle locked. Use the appropriate torx or hex key specified by the toolholder manufacturer to secure the clamping screw to the correct seating torque per the holder documentation. Inspect the insert pocket for chips or debris before seating the insert. Do not mix insert grades or coatings within a single toolholder setup without confirming thread form and geometry compatibility.