Iscar 5902176 Threading Insert 14 Tpi Un IC908 Carbide

Product Description

The ISCAR 5902176 is a laydown threading insert designed for internal UN thread cutting at 14 threads per inch. Made from solid carbide with an IC908 grade and a PVD-applied TiAlN coating, it delivers wear resistance and thermal stability across a broad range of workpiece materials. The insert features a right-hand cutting orientation and a 1/4 inch (0.2500 inch decimal) inscribed circle. At 0.126 inches thick, it seats in standard 11IR-style toolholders. This insert is used by machinists and tool and die professionals on CNC lathes and manual threading operations requiring precision UN internal thread profiles.

This insert is suited for internal threading operations on a wide range of workpiece materials, including steel, stainless steel, cast iron, non-ferrous alloys, and high-temperature alloys. The universal primary workpiece material rating (material codes H, K, M, N, P, S) makes it a versatile option for job shops and production environments alike. It fits standard 11IR-series threading toolholders and is sold individually with a minimum order quantity of 5 units.

Key Features

• IC908 solid carbide grade with PVD TiAlN coating for extended tool life
• Right-hand internal UN thread geometry at 14 TPI
• 1/4 inch inscribed circle (0.2500 inch decimal) for 11IR-style holders
• 0.126 inch insert thickness for stable seating and reduced chatter
• 0.004 inch corner radius for controlled thread form accuracy
• Compliant with ISO 13399 tooling data standards

Compatibility

Designed for use in 11IR-series internal threading toolholders. Compatible with workpiece materials across material groups H, K, M, N, P, and S per ISO designation. Suitable for UN internal thread applications at 14 TPI.

Installation Notes

This insert is installed by a qualified machinist or tooling technician. Power down and lock out the machine before changing inserts. Use the correct torx or clamping screw torque as specified by the toolholder manufacturer — do not estimate. Verify insert seating and orientation before resuming threading operations, and confirm thread pitch with a thread gauge on the first pass.