Iscar 5993819 Threading Insert 10 Tpi Api Buttress IC908

Product Description

The ISCAR 5993819 is a solid carbide laydown threading insert designed for cutting internal API Buttress threads at 10 threads per inch. Part of the ISCARTHREAD series, it carries the IC908 manufacturer grade with a PVD-applied TiAlN coating for extended tool life across a wide range of workpiece materials. The insert is configured for right-hand internal threading and features a 9.52 mm inscribed circle diameter with a corner radius of 0.15 mm. At 0.143 inches thick, it mounts in compatible laydown-style threading toolholders and is suited for CNC lathes and turning centers used in precision threading applications.

This insert is intended for machinists and tool-and-die professionals producing API Buttress-profile internal threads, commonly found in oil-country tubular goods, pipe couplings, and similar energy-sector components. The IC908 grade with PVD coating supports use on a universal range of workpiece materials including steel, stainless steel, cast iron, non-ferrous alloys, and high-temperature alloys. Typical applications include production threading on CNC turning equipment where consistent thread form and tool-life predictability are required.

Key Features

• IC908 solid carbide grade with PVD TiAlN coating for wear resistance across universal workpiece materials
• Right-hand internal API Buttress thread profile at 10 TPI
• 9.52 mm inscribed circle for seating in 16IR-series laydown threading toolholders
• Corner radius of 0.15 mm for accurate thread-root geometry
• Laydown insert style for rigid, repeatable positioning in the holder
• Compliant with ISO 13399 cutting tool data representation standards

Compatibility

Designed as an OEM-style replacement threading insert for 16IR-series laydown threading toolholders accepting a 9.52 mm inscribed circle insert with API Buttress thread form geometry.

Installation Notes

Installation is performed by a qualified machinist or toolroom technician. Ensure the CNC lathe or turning center is powered down and the spindle is fully stopped before changing inserts. Use the correct torque wrench and clamp screw specified by the toolholder manufacturer to seat the insert securely without cracking the carbide substrate. Verify thread-profile alignment with a thread gauge before resuming production cuts.