Drill America D/ACO 1/2 Cobalt Reduced Shank Drill Bit

The cobalt steel tools, made of heat-resistant cobalt and ground to a 135-degree heavy-duty split point, are designed for optimal performance in a variety of applications. These tools feature a common flute and overall length, which minimizes the need for adjustment during tool changes, and are precision-ground to ensure a high degree of concentricity between the shank and body diameter.

These tools are ideal for drilling in tough, high-tensile-strength materials, as well as low and medium-tensile-strength materials, making them versatile and suitable for a wide range of applications. The use of cobalt in the steel composition enhances the tools' performance when cutting harder metals, such as stainless steel or nickel alloys, compared to high-speed steel tools.

The gold oxide surface treatment used to identify these cobalt steel tools is a thinner oxide surface treatment than the typical black oxide, and its performance is similar to that of uncoated tools. This surface treatment not only helps to identify the tool type but also provides a level of corrosion resistance.

The round shanks of these tools allow for use with a wide variety of toolholding systems, further enhancing their versatility and compatibility with different machinery and equipment. When run in a counterclockwise direction (right-hand cut), the spiral fluted tools effectively evacuate chips up and out of the cut, reducing the risk of clogging and improving the overall efficiency of the drilling process.

These cobalt steel tools are manufactured to the National Aerospace Standard 907, ensuring that they meet the rigorous standards and specifications required for use in aerospace and other high-performance applications.

In summary, these cobalt steel tools offer a combination of durability, precision, and versatility, making them a reliable choice for a wide range of drilling tasks in both tough, high-tensile-strength materials and more moderate-strength materials. Their design features and manufacturing standards ensure consistent performance and long-lasting reliability in demanding environments.

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