Iscar 4818356 NPMT09LG IC908 Indexable Drill Insert

Product Description

The ISCAR 4818356 is an NPMT-style indexable drill insert designed for use in indexable drill bodies requiring precision cutting geometry and reliable edge life. Built from solid carbide in IC908 grade and coated with TiAlN via a PVD process, this insert delivers consistent performance across a wide range of workpiece materials. The LG chipbreaker geometry promotes controlled chip evacuation during drilling operations. With an insert size code of 09, a width of 0.374 inches, and a length of 0.394 inches, this insert fits drill bodies engineered to ISCAR FINEBEAM series specifications. It is part of the ISO 13399 standard family, making tool data compatible with CAM and tool management systems.

This insert is rated for universal primary workpiece material compatibility, covering ISO material groups H, K, M, P, and S. That range includes hardened steels, cast irons, general steels, stainless steels, and heat-resistant superalloys. It is suited for both production shop and job-shop environments where a single insert grade must handle varied material runs without frequent grade changes. Machinists and CNC operators in metal-cutting operations are the primary installers of this insert.

Key Features

• IC908 carbide grade with TiAlN PVD coating for broad material compatibility and wear resistance
• LG chipbreaker geometry for controlled chip formation and evacuation during drilling
• FINEBEAM series designation ensuring dimensional fit with compatible ISCAR drill bodies
• ISO 13399 compliant — tool data integrates with CAM and digital tool management platforms
• Universal material coverage across ISO groups H, K, M, P, and S
• Compact insert geometry: 0.374 inches wide by 0.394 inches long

Compatibility

Designed for use in ISCAR FINEBEAM series indexable drill bodies that accept NPMT09 insert size inserts. Specific drill body compatibility should be confirmed against ISCAR tooling catalogs for the FINEBEAM platform.

Installation Notes

Insert seating and torque should follow the drill body manufacturer's clamping specifications for NPMT-style inserts. Always power down and lock out the machine spindle before changing inserts. Use the correct torx or hex key as specified by the drill body — do not substitute drivers that may round the screw head. Inspect the pocket seating surface for chips or debris before installing a new insert to ensure full contact and repeatable runout.