Iscar 3318622 Threading Insert 18 Tpi Un Solid Carbide IC1007

Product Description

The ISCAR 3318622 is a solid carbide laydown threading insert designed for external UN thread cutting at 18 threads per inch. It carries the IC1007 manufacturer grade with a PVD-applied TiAlN coating, placing it in the submicron carbide category suited for demanding threading operations. The insert features a 16ER style profile with a 3/8 inch (9.52 mm) inscribed circle and a corner radius of 0.0070 inch (0.17 mm). Right-hand orientation makes it compatible with standard external threading toolholders. Machinists and CNC operators working in job shops or production environments use this insert for consistent thread form on a broad range of workpiece materials.

This insert is intended for external UN-standard threading applications. The IC1007 grade with TiAlN finish is rated for use across universal workpiece material groups, covering common steel, stainless, cast iron, nonferrous, and heat-resistant alloy families as indicated by material codes H, K, M, N, P, and S. It fits into 16ER-profile toolholders used on CNC lathes and turning centers in both production and maintenance threading scenarios. The laydown seating geometry provides stable insert indexing and repeatable thread geometry across multiple cutting edges.

Key Features

• Solid carbide submicron substrate with IC1007 grade designation
• PVD TiAlN coating for wear resistance across multiple workpiece material groups
• 18 TPI UN external thread form, right-hand cutting orientation
• 16ER insert style with 3/8 inch inscribed circle for standard toolholder compatibility
• Corner radius of 0.0070 inch (0.17 mm) for accurate thread root profile
• Rated for universal material groups: H, K, M, N, P, and S

Compatibility

Designed for use in 16ER-profile external threading toolholders conforming to ISO 13399 standards. Suitable for UN-standard external threading applications across material groups H, K, M, N, P, and S as specified by the manufacturer.

Installation Notes

This insert is installed and indexed by a qualified machinist or CNC operator. Power down and lock out the machine spindle before changing inserts. Ensure the toolholder pocket and seating surfaces are clean and free of chips before seating the insert. Follow the toolholder manufacturer torque guidelines for the clamping screw to avoid insert movement or fracture during cutting.