Iscar 5993305 Threading Insert 8 Tpi Api Round IC908

Product Description

The ISCAR 5993305 is a laydown-style threading insert designed for internal API Round thread cutting at 8 threads per inch (TPI). Manufactured from solid carbide with an IC908 grade coating, this insert delivers consistent thread form and tool life in demanding turning applications. It features a right-hand cutting orientation, a 3/8-inch inscribed circle, and a 0.143-inch thickness. The IC908 grade is suited for universal workpiece materials, making it applicable across a broad range of metals encountered in threading operations. This insert is installed by machinists and toolroom technicians in CNC and manual turning centers equipped with compatible ISCARTHREAD toolholders.

This insert is intended for internal threading operations that must conform to API Round thread standards, commonly encountered in oil country tubular goods, pipe fittings, and coupling applications. The right-hand laydown configuration seats into standard 16IR-series toolholders. It is appropriate for production and maintenance threading work where API Round thread form accuracy is required. The IC908 grade supports use across multiple workpiece material categories, including steel, cast iron, stainless, non-ferrous, and heat-resistant alloys.

Key Features

• API Round internal thread form at 8 TPI for oil-field and pipe threading applications
• IC908 solid carbide grade rated for universal workpiece materials including steel, stainless, cast iron, and high-temp alloys
• Right-hand cutting orientation in 16IR laydown insert style
• 3/8-inch inscribed circle with 0.143-inch thickness for use in standard 16IR toolholders
• Corner radius of 0.0169 inches (0.43 mm) for precise thread root geometry
• Compliant with ISO 13399 cutting tool data representation standards

Compatibility

Designed for use with 16IR-series ISCARTHREAD internal threading toolholders. Consult toolholder documentation to confirm pocket geometry and clamping style before installation.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Ensure the turning center is fully powered down and the spindle is locked before seating or replacing inserts. Use the appropriate torx or hex key to the toolholder manufacturer's clamping specification, and inspect the insert pocket for debris or damage before seating the new insert. Verify thread form with a go/no-go gauge or optical comparator after the first pass before committing to full production runs.