Kennametal 4150790 Carbide Jobber Drill 9/16 in 140 Deg

Product Description

The KENNAMETAL 4150790 is a solid carbide jobber-length drill bit designed for high-performance metal cutting in demanding production and maintenance environments. Built to DIN 6537K specification, it features a 140-degree point angle for aggressive, self-centering entry and a multilayer TiAlN coating that extends tool life under elevated cutting temperatures. The two-flute, right-hand spiral configuration promotes efficient chip evacuation. At 9/16 inch (0.5626 inch decimal) in diameter with a 5.2362-inch overall length, this drill is sized for general-purpose jobber work across a range of metalworking applications. Installation is handled by machinists and tool-room technicians operating standard drill presses, lathes, or CNC machining centers.

The 4150790 is suited for drilling steel, stainless steel, cast iron, aluminum, and other non-ferrous materials. Its 5xD flute-by-diameter ratio and 3.2677-inch flute length accommodate moderate-depth holes in both manual and automated machining setups. The straight cylindrical shank diameter of 0.5781 inch fits standard chuck and collet tooling. This drill performs without through-spindle coolant, making it compatible with conventional machine tool setups that rely on external flood or mist cooling.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard and abrasive workpiece materials
• Multilayer TiAlN coating provides heat resistance and extended tool life at higher cutting speeds
• 140-degree point angle promotes positive engagement and reduces walking on entry
• Right-hand, regular spiral flute geometry supports consistent chip removal
• DIN 6537K specification ensures dimensional conformance for repeatable tooling setups
• Tapered web configuration maintains core strength through the flute length

Compatibility

Designed for use in steel, stainless steel, cast iron, aluminum, and non-ferrous workpiece materials. Fits standard drill chucks and collet holders accepting a 0.5781-inch straight cylindrical shank. Compatible with conventional drill presses, manual lathes, and CNC machining centers without through-coolant capability.

Installation Notes

This drill bit is installed and operated by machinists using standard chuck or collet toolholding systems. Ensure the machine spindle is fully stopped and locked out before changing tooling. Confirm shank seating and runout before beginning a cut. Apply appropriate external coolant or cutting fluid based on workpiece material to maintain coating integrity and tool life.