Iscar 5902243 Threading Insert 28 Tpi Unj IC908 Carbide

Product Description

The ISCAR 5902243 is a laydown-style threading insert designed for external UNJ thread forms at 28 threads per inch (TPI). Built from solid carbide in the IC908 manufacturer grade, it carries a PVD-applied TiAlN coating for wear resistance and thermal stability during threading operations. The insert features a 3/8 inch (0.375 inch) inscribed circle, a thickness of 0.143 inches, and a corner radius of 0.006 inches. Right-hand orientation makes it suited for standard external threading passes. This insert is part of the ISCARTHREAD series and targets CNC lathe and turning center applications where tight thread tolerances are required on aerospace and precision-grade fastener profiles.

The 5902243 is applied in external UNJ threading operations across a broad range of workpiece materials, including steel, stainless steel, cast iron, non-ferrous alloys, high-temperature alloys, and titanium, consistent with its H, K, M, N, P, and S ISO material group ratings. It fits toolholders accepting the 16ER insert style. Typical use cases include threading aerospace fastener profiles and precision mechanical components where UNJ thread form geometry is specified by drawing.

Key Features

• IC908 solid carbide grade with PVD TiAlN coating for extended tool life in demanding materials
• 28 TPI UNJ external thread form for aerospace and precision fastener applications
• 3/8 inch inscribed circle with 0.006 inch corner radius for accurate thread profile generation
• Right-hand cutting geometry, 16ER insert style for compatibility with standard ISCARTHREAD toolholders
• Universal workpiece material rating covering ISO groups H, K, M, N, P, and S
• ISO 13399 compliant for integration with tool management and presetting systems

Compatibility

Designed for use in toolholders accepting the 16ER laydown threading insert style within the ISCARTHREAD series. No additional specific compatible model numbers or system families were provided in the product data.

Installation Notes

Installation and indexing of threading inserts should be performed by a qualified machinist or CNC tooling technician with the machine spindle fully stopped and locked out per facility lockout/tagout procedures. Use a calibrated torque wrench and the appropriate insert screw driver to seat the insert correctly in the pocket without overtightening. Inspect the insert pocket and clamping screw for wear or damage before seating a new insert. Verify thread form and pitch against a thread gauge after first-pass cuts before committing to full production runs.