Iscar 5993248 Threading Insert 16ER12UN IC908 12 Tpi Un

Product Description

The ISCAR 5993248 is a laydown-style threading insert designed for external UN thread turning operations. Manufactured from solid carbide with a PVD-applied TiN/TiAlN coating, it carries the IC908 manufacturer grade, which targets universal workpiece materials including steels, cast irons, stainless, nonferrous alloys, and superalloys. The insert is rated for 12 threads per inch (TPI) on the UN thread standard and features a right-hand cutting orientation. The inscribed circle measures 9.53 mm (0.375 inches), thickness is 0.143 inches, and the corner radius is 0.25 mm (0.010 inches). Licensed machinists and CNC toolroom technicians install this insert in compatible laydown threading toolholders on turning centers and engine lathes.

This insert is suited for external UN threading passes on turned components in job shop, production machining, and maintenance-repair environments. The IC908 submicron carbide grade with PVD coating handles a broad range of workpiece materials, making it a practical choice when threading mild carbon steels, alloy steels, stainless steels, aluminum, and heat-resistant superalloys in a single tooling setup. It follows the 16ER insert style and is part of the ISCARTHREAD series. Standard package quantity is 1 insert; minimum order quantity is 5 units.

Key Features

• IC908 submicron solid carbide grade with PVD TiN/TiAlN coating for extended tool life across universal workpiece materials
• 12 TPI UN external thread form, right-hand cut
• 16ER insert style with 9.53 mm inscribed circle (3/8 inch)
• 0.143 inch insert thickness with 0.010 inch corner radius for controlled thread root geometry
• Chipbreaker designation B for chip management during threading passes
• Compliant with ISO 13399 cutting tool data representation standard

Compatibility

Designed as a laydown threading insert in the 16ER style for use in compatible ISCARTHREAD series toolholders and other toolholder systems that accept the 16ER seat geometry for external UN threading applications.

Installation Notes

Insert installation and indexing should be performed by a qualified machinist or CNC toolroom technician with the machine in a fully stopped and locked-out state. Use the appropriate torque wrench and clamp screw specified by the toolholder manufacturer when seating the insert - do not over-tighten by hand estimation alone. Confirm thread form and pitch with a thread gauge after the first test pass before committing to full production runs. Handle carbide inserts with care to avoid chipping the cutting edge during installation.