Kennametal 4112512 Solid Carbide Jobber Drill 1/2 Inch

Product Description

The KENNAMETAL 4112512 is a solid carbide jobber-length drill bit designed for precision hole-making in steel and similarly demanding workpiece materials. It features a 135-degree split-point geometry that reduces thrust and walking on entry, paired with a multilayer TiAlN coating that extends tool life under high-heat cutting conditions. The straight cylindrical shank measures 0.5512 inches in diameter and fits standard drill chucks and collet holders. At 4.8819 inches overall length with a flute length of 3.0315 inches, it delivers a 5xD depth-to-diameter ratio suited to through-hole and moderate-depth drilling applications. Coolant-through capability supports chip evacuation and thermal management in production environments. This bit is intended for installation and use by machinists, tool-and-die professionals, and metalworking tradespeople.

The 4112512 is built for ferrous metal drilling, with steel listed as the primary workpiece material. It conforms to DIN 6537K specification, making it a recognized standard in CNC machining centers, drill presses, and manual metalworking setups. The 2-flute regular spiral configuration promotes efficient chip removal in straight and through-bore applications. A maximum drilling depth of 2.3622 inches (60 millimeters) and a tapered web configuration help maintain core strength throughout the cut. This drill is appropriate for both production-run use and precision one-off applications where consistent diameter tolerance is required.

Key Features

• Solid carbide construction for rigidity and wear resistance in steel cutting
• Multilayer TiAlN coating reduces heat buildup and extends tool life
• 135-degree point angle minimizes drill walk and reduces entry thrust
• Coolant-through design supports chip evacuation and thermal management
• Conforms to DIN 6537K specification for dimensional consistency
• Tapered web and 2-flute regular spiral for efficient chip flow

Compatibility

Designed as an OEM-specification replacement or production drill for steel and ferrous metalworking applications requiring a 1/2-inch diameter, DIN 6537K-compliant, straight-shank solid carbide jobber drill with coolant-through capability.

Installation Notes

Installation and use should be performed by qualified machinists or metalworking professionals familiar with carbide tooling. Power down and de-energize the machine spindle completely before seating or removing the drill. Carbide tooling is brittle — avoid lateral loading, interrupted cuts beyond the tool's rated capacity, or dropping the bit on hard surfaces. Verify spindle runout and collet or chuck condition before use, as excessive runout accelerates edge chipping and reduces diameter accuracy.