Drill America DWDCO Cobalt Drill Bit with Reduced Shank

The cobalt steel tools are made of heat-resistant cobalt and ground to a heavy-duty 135° split point. They have a common flute and overall length for minimal adjustment during tool changes, and are precision-ground for a high degree of concentricity between the shank and body diameter. These tools are ideal for drilling in tough, high-tensile-strength materials, and they can expand the size range capacity of a portable drill chuck.

The cobalt steel tools are also ideal for drilling in low and medium-tensile-strength materials. They are similar to high-speed steel, but with more cobalt for improved performance when cutting harder metals such as stainless steel or nickel alloys. The gold oxide surface treatment is thinner than the typical black oxide, and it is used to identify the cobalt steel tools, but the performance is similar to that of uncoated tools.

The round shanks of these tools allow them to be used with a wide variety of tool-holding systems. When run in a counterclockwise direction (right-hand cut), the spiral-fluted tools evacuate chips up and out of the cut to reduce clogging. The tools are manufactured to the National Aerospace standard 907.

In summary, the cobalt steel tools are designed for high-performance drilling in a variety of materials, with features that include a heavy-duty split point, precision grinding, and a surface treatment that identifies the tool as cobalt steel. The round shanks and spiral flutes provide additional benefits for tool-holding and chip evacuation, making these tools well-suited for a range of demanding drilling applications.

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