Kennametal 5990914 Solid Carbide Jobber Drill 4.10 Mm

Product Description

The KENNAMETAL 5990914 is a solid carbide jobber-length drill designed for precision hole-making in aluminum and non-ferrous materials. It features a 135-degree split-point angle that reduces walking and cutting forces at entry, making it well suited for production environments where consistent hole quality matters. The drill measures 4.10 mm (0.1614 inches) in diameter with an overall length of 74.00 mm (2.9134 inches) and a 5xD flute-to-diameter ratio. Coolant-through capability supports higher feed rates and improved chip evacuation in deep-hole applications. The bright, uncoated finish is standard for carbide tooling used on non-ferrous workpieces where coating adhesion is not required.

This drill is intended for use in CNC machining centers, drill presses, and multi-spindle equipment where tight tolerances and repeatable performance are required. It is suited for production drilling of aluminum, copper alloys, brass, and similar non-ferrous materials in industrial and job-shop settings. The 3-flat (flatted) shank design provides a positive grip in standard drill chucks and toolholders, reducing slippage under load. Machinists, tool-and-die technicians, and CNC operators working in aerospace, automotive, and general fabrication will find this drill applicable to close-tolerance work in that diameter range.

Key Features

• Solid carbide construction for rigidity and wear resistance in non-ferrous applications
• 135-degree point angle reduces entry walking and lowers thrust force
• Coolant-through design supports chip evacuation and extended tool life in deeper holes
• 3-flat shank prevents rotation in the toolholder chuck
• Bright/uncoated finish appropriate for aluminum and non-ferrous workpiece materials
• Diameter tolerance of 0.0002 to 0.0006 inches supports close-tolerance hole requirements

Compatibility

Designed for use on aluminum and non-ferrous workpiece materials. Fits standard toolholders and drill chucks accepting a 6 mm flatted shank. Appropriate for the 4.00 mm to 5.00 mm drill bit size range category.

Installation Notes

Installation and tool changes should be performed with the machine in a full-stop, energy-isolated state per standard lockout/tagout procedures. Secure the 3-flat shank firmly in a compatible toolholder or drill chuck before starting the spindle. Verify coolant-through lines are clear and flow is confirmed before beginning drilling cycles. Tool setup and offsets should be verified by a qualified machinist or CNC operator before production runs.