Iscar 5901814 Laydown Threading Insert 11.5 Tpi Npt

Product Description

The ISCAR 5901814 is a solid carbide laydown threading insert designed for cutting external NPT threads at 11.5 threads per inch. Manufactured to the ISCARTHREAD series, this insert carries the IC908 grade with a PVD-applied TiAlN coating, making it suitable for threading across a broad range of workpiece materials. The 3/8 inch (0.3750 inch decimal) inscribed circle and 0.1430 inch thickness conform to standard laydown seat geometry. Right-hand cutting orientation is fixed. Licensed machinists and CNC lathe operators use this insert for pipe thread applications where NPT form accuracy and surface finish consistency are required.

This insert is intended for external NPT pipe threading operations on CNC lathes and turning centers. The IC908 grade with PVD TiAlN coating is suited for universal workpiece materials, including steel, stainless, cast iron, non-ferrous metals, and high-temperature alloys as indicated by the material codes P, M, K, N, S, and H. It fits standard laydown threading toolholders accepting 16ER-style inserts. Typical applications include threading pipe fittings, nipples, and couplings in production or job-shop environments.

Key Features

• IC908 solid carbide grade with PVD TiAlN coating for extended tool life across universal workpiece materials
• 11.5 TPI NPT thread form for standard American pipe thread profiles
• Right-hand external cutting orientation
• 3/8 inch inscribed circle (0.3750 inch decimal) fits standard 16ER laydown toolholders
• 0.1430 inch insert thickness for precise seat engagement
• Compliant with ISO 13399 tooling data standards

Compatibility

Designed for use in 16ER-style laydown threading toolholders that accept a 3/8 inch inscribed circle insert. Fits toolholders configured for external NPT threading operations.

Installation Notes

This insert is installed by a machinist or CNC setup technician. Ensure the machine spindle is fully stopped and the toolholder is secured before seating or removing the insert. Use the correct torque wrench and insert screw specified by the toolholder manufacturer to avoid insert movement or seat damage. Verify thread form and pitch with a calibrated NPT thread gauge after the first test pass before committing to a production run.