Kennametal 4042915 Indexable Drill Insert Sppxhp KCU25

Product Description

The KENNAMETAL 4042915 is a solid carbide indexable drill insert in the SPPX style with an HP chipbreaker geometry, designed for use in indexable insert drills on CNC machining centers and drilling operations. The insert carries the KCU25 manufacturer grade and features a CVD-applied TiCN and Al2O3 multilayer coating for thermal resistance and wear performance. Key dimensional specs include a 0.625-inch inscribed circle, a thickness of 0.234 inches, a corner radius of 0.0469 inches, and a hole diameter of 0.217 inches. This insert is sized as 15T512 and falls within material grade classifications C2 and C6. It is intended for installation and replacement by machinists and tooling technicians in production shop environments.

The KENNAMETAL 4042915 suits indexable drilling applications where controlled chip formation and coating durability are required. The HP chipbreaker is suited for through-hole and blind-hole drilling on steel and similar workpiece materials. This insert is sold individually per package, with a minimum order quantity of 5 units, making it practical for toolroom stock replenishment or production-run tooling inventory management.

Key Features

• SPPX insert style with HP chipbreaker geometry for controlled chip evacuation during drilling
• KCU25 grade solid carbide substrate with CVD-applied TiCN and Al2O3 multilayer coating
• 0.625-inch inscribed circle and 15T512 insert size designation
• Corner radius of 0.0469 inches for edge strength at cutting corners
• Hole diameter of 0.217 inches for secure clamping in compatible insert drill bodies
• Material grade C2 and C6 classification covering a broad range of drilling applications

Compatibility

Designed as an OEM-style replacement indexable drill insert for tooling systems that accept SPPX-style inserts with a 15T512 size designation and a 0.217-inch mounting hole diameter.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician with the machine powered down and the spindle locked out per facility lockout/tagout procedures. Use the appropriate torx or hex key as specified by the drill body manufacturer to achieve proper clamping torque — do not overtighten or undertighten the insert screw. Inspect the insert pocket and clamping screw for wear or damage before seating a new insert. Ensure the insert seats fully and flush in the pocket before resuming operation.