Iscar 5994355 Threading Insert 24 Tpi 3/16 Inch IC228

Product Description

The ISCAR 5994355 is a solid carbide laydown threading insert designed for internal UN thread cutting at 24 threads per inch. Manufactured in the IC228 grade with a PVD-applied TiN coating, this insert delivers wear resistance and edge stability on a broad range of workpiece materials. The right-hand orientation suits standard internal threading operations. With a 3/16 inch (0.1875 inch) inscribed circle and a thickness of 0.079 inches, the 5994355 fits standard 08IR toolholders used in CNC lathes and threading applications. Licensed machinists and CNC operators working in job shop, production, or maintenance environments are the primary installers.

This insert is suited for internal UN threaded features in parts made from carbon steels, alloy steels, cast irons, stainless steels, high-temperature alloys, and non-ferrous materials. The IC228 grade is rated for a universal workpiece material range, covering ISO material codes H, K, M, N, P, and S. Typical applications include threading bores, nuts, and fittings in precision machining environments where consistent thread form and tool life are required at 24 TPI.

Key Features

• Solid carbide construction in ISCAR IC228 grade for broad material compatibility
• PVD-applied TiN coating for improved wear resistance and edge integrity
• Right-hand cut for standard internal UN threading operations
• 24 TPI thread form for UN internal thread standards
• 3/16 inch inscribed circle fits 08IR toolholder systems
• Conforms to ISO 13399 insert identification standards

Compatibility

Designed as a replacement-style threading insert for 08IR toolholders used in internal UN thread turning operations. Compatible with workpiece material grades C1, C2, C5, and C6 per material classification, and ISO material codes H, K, M, N, P, and S.

Installation Notes

Installation is performed by a qualified CNC machinist or turning center operator. Power down the machine and ensure the spindle is fully stopped before seating or removing inserts. Use the appropriate torx or hex key to secure the insert clamp to the manufacturer torque specification for the toolholder. Inspect the insert pocket and clamp for chips or wear before seating a new insert to ensure correct seating and thread form accuracy.