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The ISCAR 5901417 is a laydown-style threading insert engineered for right-hand external thread cutting using a partial profile 60-degree thread form. Built from solid carbide with a PVD-applied TiCN/TiN coating, this insert carries the IC508 manufacturer grade, which is designed for universal workpiece material compatibility across a broad range of metals. The insert features a 3/8 inch (0.3750 inch decimal) inscribed circle, a thickness of 0.143 inches, and covers a thread pitch range of 0.50 to 3.00 mm, equivalent to 48 to 8 TPI. It is part of the ISCARTHREAD series and conforms to ISO 13399 standards.
This insert is suited for external threading operations on CNC lathes and turning centers in both production and job-shop environments. Its universal primary workpiece material rating makes it applicable across steel, stainless steel, cast iron, nonferrous metals, and heat-resistant superalloys. Machinists and CNC operators working in general-purpose threading applications will find the IC508 grade and PVD coating appropriate for both light and moderate cutting conditions. The partial profile design cuts thread forms without defining the crest, making it adaptable across thread depths within the covered pitch range.
Designed as an OEM-style replacement threading insert for toolholders accepting the 16ER laydown insert style with a 3/8 inch inscribed circle seating geometry.
Threading inserts of this type are installed and replaced by qualified machinists or CNC tooling technicians. Power down and lock out the machine spindle before changing inserts. Use the correct torque screwdriver specified by the toolholder manufacturer when securing the insert clamp screw — do not overtighten, as carbide inserts are brittle and can fracture under excess clamping force. Verify insert orientation and hand designation match the toolholder before initiating a threading cycle.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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