Iscar 5902007 Threading Insert 40 Tpi Un Solid Carbide IC508

Product Description

The ISCAR 5902007 is a solid carbide laydown threading insert designed for external UN thread cutting at 40 threads per inch. Coated with TiCN/TiN via a PVD process under the IC508 grade, this insert is built for consistent thread form and wear resistance across a wide range of workpiece materials. It features a right-hand cutting orientation and a 3/8-inch (0.375 inch) inscribed circle with a 0.1430-inch thickness. The IC508 PVD coating provides a hard, low-friction surface suited for threading operations on steel, stainless, non-ferrous, and high-temp alloys. Installed by machinists and CNC operators in turning centers and engine lathes.

This insert is suited for external threading applications on workpieces classified under universal material groups, covering a broad spectrum of metals including carbon steel, stainless steel, cast iron, non-ferrous alloys, and superalloys. It is compatible with standard laydown threading toolholders using the 16ER insert style designation. Typical applications include production threading on CNC turning centers and manual lathes where consistent 40 TPI UN thread profiles are required. The IC508 grade with PVD coating is particularly effective when threading difficult-to-machine materials where edge retention and coating adhesion are critical.

Key Features

• Solid carbide substrate with IC508 PVD TiCN/TiN coating for extended tool life
• 40 TPI UN external thread form, right-hand cutting orientation
• 3/8-inch inscribed circle (0.3750 inch) for compatibility with 16ER-style toolholders
• 0.0020-inch (0.05 mm) corner radius for precise thread root geometry
• Universal material compatibility covering steel, stainless, cast iron, non-ferrous, and superalloys
• Compliant with ISO 13399 cutting tool data representation standards

Compatibility

Designed for use with 16ER-style laydown threading toolholders configured for external UN thread cutting. Verify toolholder pocket geometry and clamping style against the 16ER insert designation before installation.

Installation Notes

Threading inserts of this type are installed and replaced by qualified machinists or CNC tooling technicians. Ensure the machine spindle is fully stopped and locked out before changing inserts. Use the appropriate torque wrench and insert screw specified by the toolholder manufacturer — do not over-torque the clamping screw, as carbide inserts are brittle and can fracture under uneven clamping force. Confirm insert seating and orientation in the pocket before resuming cutting operations.