Precision Twist Drill 6000559 Cobalt Jobber Drill 8.20mm

Product Description

The PRECISION TWIST DRILL 6000559 is a cobalt jobber-length drill bit designed for general-purpose and heavy-duty drilling in metalworking applications. Built to DIN 338 and ANSI standards, it features a 135-degree split point with web thinning for reduced walking and easier entry without a center punch. The 8.20 mm (0.3228 inches) diameter, two-flute regular spiral geometry moves chips efficiently during through-hole and blind-hole operations. An oxide and straw-finish coating provides added lubricity and heat resistance. This bit is suited for machinists, maintenance technicians, fabricators, and tool-room professionals who need reliable performance in ferrous and non-ferrous materials.

The 6000559 is built for drilling steel, stainless, cast iron, aluminum, and non-ferrous alloys, corresponding to material codes P, M, K, N, and S. The straight cylindrical shank fits standard drill chucks on floor-standing drill presses, benchtop machines, and hand-held power drills. With a flute-by-diameter ratio of 9xD, this bit handles deeper drilling passes without sacrificing chip evacuation. It is a practical choice for production shops, maintenance facilities, and job-site metalwork where a consistent, heavy-duty cobalt bit is required.

Key Features

• Cobalt high-speed steel construction for heat resistance in hard and abrasive materials
• 135-degree split point with web thinning reduces thrust and minimizes drill walking
• Oxide and straw finish coating improves lubricity and extends tool life
• Regular spiral flute geometry with 9xD ratio supports deeper drilling and efficient chip removal
• Straight cylindrical shank compatible with standard drill chucks
• Meets DIN 338 and ANSI standards for consistent dimensional accuracy

Compatibility

Designed as a general-purpose cobalt jobber drill for use in standard drill chucks across drill presses and handheld power drills; suitable for drilling steel, stainless steel, cast iron, aluminum, and other non-ferrous alloys (material codes P, M, K, N, S).

Installation Notes

Installation and use should be performed by a qualified machinist or maintenance technician familiar with rotating cutting tools. Secure the workpiece firmly before drilling and ensure the chuck is fully tightened on the straight shank before operation. Power down and disconnect the machine before changing bits. Do not exceed the recommended feed and speed parameters for the workpiece material and bit diameter.