Iscar 5901586 Threading Insert 1.25mm Iso Solid Carbide IC908

Product Description

The ISCAR 5901586 is a laydown-style external threading insert designed for ISO-standard thread forms at a 1.25 mm pitch. Manufactured from solid carbide with a PVD-applied TiAlN coating under the IC908 grade designation, this insert delivers thermal resistance and edge hardness suited to interrupted cuts and high-speed threading passes. The 16ER insert style features a 3/8 inch (0.375 inch) inscribed circle and a 0.143 inch thickness. Right-hand cutting geometry makes it the standard orientation for conventional external threading operations on CNC lathes and turning centers.

This insert is intended for external ISO metric thread turning on CNC turning centers and multi-axis lathes. The IC908 grade with PVD TiAlN coating supports threading across a broad range of workpiece materials, including steel, stainless steel, cast iron, non-ferrous alloys, and high-temperature alloys. It fits 16ER-compatible toolholders used in production and job-shop environments where consistent thread form and insert-to-insert repeatability are required. Installation is performed by machinists and CNC setup technicians.

Key Features

• IC908 solid carbide grade with PVD TiAlN coating for extended tool life across universal workpiece materials
• 1.25 mm ISO pitch for standard metric external threading applications
• Right-hand cutting orientation for conventional external thread turning
• 3/8 inch inscribed circle in the 16ER insert style for secure seating in compatible toolholders
• 0.143 inch insert thickness provides rigidity during threading passes
• 0.15 mm corner radius supports precise thread root geometry

Compatibility

Designed for use in 16ER-style external threading toolholders that accept the 16ER insert form. Compatible with the ISCARTHREAD series toolholder lineup. Verify toolholder pocket and clamping configuration before installation.

Installation Notes

Threading inserts of this type are seated and clamped by qualified machinists or CNC setup technicians following machine builder and toolholder manufacturer torque and clamping procedures. Power down and lock out the machine spindle before changing inserts. Inspect the toolholder pocket and clamping screw for wear or debris before seating the new insert. Do not exceed the cutting parameters specified in the toolholder or grade application data for the workpiece material being threaded.