Iscar 5996066 Threading Insert 18 Tpi Npt IC228

Product Description

The ISCAR 5996066 is a solid carbide laydown threading insert designed for cutting internal NPT threads on a lathe or threading center. It carries the IC228 grade with a PVD-applied TiCN/TiN coating, making it suitable for a wide range of workpiece materials including steel, stainless, cast iron, nonferrous alloys, and high-temperature alloys. The insert produces right-hand internal threads at 18 threads per inch to the NPT standard. With an inscribed circle of 3/16 inches (0.1875 inches) and a thickness of 0.079 inches, the 08IR insert style seats securely in compatible toolholders. Licensed machinists, CNC lathe operators, and precision threading specialists typically specify this insert for pipe-thread applications requiring consistent thread form and tool life.

The 5996066 is used in production and job-shop threading operations where NPT internal pipe threads are required. Typical applications include threading pipe fittings, valve bodies, manifolds, and fluid-system components in materials ranging from carbon steel and alloy steel to aluminum, titanium, and other universal workpiece classes. The IC228 grade is positioned as a multi-material performer, making it a practical stock insert for shops that run varied materials on the same program. This insert ships in a package quantity of one and must be ordered in multiples of five to meet the minimum order quantity requirement.

Key Features

• Solid carbide substrate with IC228 grade for wear resistance across universal workpiece materials
• PVD TiCN/TiN coating for improved tool life and surface finish on threaded profiles
• Right-hand cut, internal thread orientation for NPT pipe-thread production
• 18 TPI NPT thread form for standard pipe-thread engagement
• 08IR insert style with 3/16-inch inscribed circle fits standard 08IR-series toolholders
• Meets ISO 13399 tooling data standards for integration with CAM and tool-management systems

Compatibility

Designed for use in 08IR-series internal threading toolholders that accept laydown-style threading inserts. The insert is rated for universal primary workpiece material codes H, K, M, N, P, and S per the input data. Verify toolholder pocket geometry and insert retention method before mounting.

Installation Notes

Threading inserts are installed and changed by machinists or CNC setup technicians. Power down and lock out the lathe or turning center before indexing or replacing the insert. Use the correct torx or hex key at the manufacturer-specified seating method to prevent insert rocking or chatter. Do not exceed the recommended depth of cut or feed rate for the insert grade, and confirm that the toolholder and insert style code match before tightening the clamp.