Kennametal 5990916 Solid Carbide Jobber Drill 4.40 Mm

Product Description

The KENNAMETAL 5990916 is a solid carbide jobber-length drill bit designed for precision hole-making in aluminum and non-ferrous materials. It features a 135-degree split point angle for self-centering starts and reduced thrust, paired with a bright uncoated finish that suits applications where coating additives are undesirable. The drill measures 4.40 mm in diameter with an overall length of 2.91 inches (74.00 mm) and a flute length of 1.42 inches (36.00 mm). Coolant-through capability supports chip evacuation and heat control during deep-hole drilling. This bit is suited for use by machinists and CNC operators working in production and job-shop environments.

This drill is intended for use on aluminum, copper, brass, and other non-ferrous workpiece materials in both manual and CNC drilling operations. The 5xD flute-to-diameter ratio and right-hand spiral flute geometry make it well suited for through-hole and blind-hole applications requiring tight tolerances. A 3-flat flatted shank with a 6 mm shank diameter provides positive grip in standard drill chucks and toolholders, reducing slippage under torque. Maximum drilling depth is rated at 29.00 mm.

Key Features

• Solid carbide construction for rigidity and wear resistance in non-ferrous applications
• 135-degree point angle for self-centering entry and reduced walking
• Coolant-through design supports chip evacuation and thermal management
• Bright uncoated finish compatible with a wide range of cutting fluids
• 3-flat shank prevents rotation in chuck or toolholder
• Tight diameter tolerance of 0.0002 to 0.0006 inches for consistent hole quality

Compatibility

Designed for use with aluminum and non-ferrous workpiece materials. Compatible with toolholders and drill chucks accepting a 6 mm flatted (3-flat) shank. Fits drill bit size range 4.00 to 5.00 mm (0.1500 to 0.2000 decimal inch).

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or CNC technicians. Ensure the machine spindle is fully stopped and the tool is securely seated in the chuck or toolholder before beginning any operation. Verify coolant-through lines are connected and pressurized if using the internal coolant feature. Follow applicable shop safety standards and machine manufacturer guidelines for RPM and feed rate selection.