Drill America D/ACO3/4 3/4 Reduced Shank Cobalt Drill Bit with 1/2 Shank

Crafted from heat-resistant cobalt and ground to a robust 135° split point angle, these drill bits are designed for durability and precision. They feature a standard flute design and overall length, minimizing the need for adjustments during tool changes. The precision grinding ensures a high degree of concentricity between the shank and body diameter, crucial for accurate drilling operations.

These cobalt steel tools are engineered with a higher cobalt content compared to traditional high-speed steel, enhancing their cutting performance, especially in tough materials such as stainless steel and nickel alloys. The gold oxide surface treatment, thinner than black oxide, is commonly applied to distinguish cobalt steel tools. It offers performance similar to uncoated tools, maintaining efficiency and durability.

The round shanks of these drill bits allow compatibility with a wide range of toolholding systems, providing versatility in various drilling applications. When used in a counterclockwise direction (right-hand cut), the spiral fluted design effectively evacuates chips from the cutting area, reducing the risk of clogging and ensuring smoother drilling operations.

Manufactured to meet the rigorous standards of National Aerospace Standard 907, these drill bits expand the capacity of portable drill chucks, making them suitable for both professional and industrial use. Their ability to drill efficiently in high tensile strength materials makes them ideal for demanding applications where precision and durability are paramount.

In addition to their performance benefits, these cobalt steel drill bits are also suitable for drilling in low and medium tensile strength materials, offering versatility across a wide range of projects and materials. The combination of cobalt steel construction and precision engineering ensures consistent performance and longevity, even under challenging conditions.

For professionals and hobbyists alike, these drill bits represent a reliable choice for achieving precise and clean drilling results. Whether used in aerospace, automotive, or general industrial applications, their robust design and high-performance capabilities make them indispensable tools in any toolkit.

In summary, these cobalt steel drill bits stand out for their superior construction, precision engineering, and versatility across various drilling tasks. With features such as the 135° split point angle, gold oxide surface treatment, and spiral fluted design, they are engineered to deliver optimal performance and reliability in both tough and standard drilling operations. Their adherence to National Aerospace Standard 907 underscores their quality and suitability for demanding industrial applications, making them a preferred choice for professionals seeking durable and efficient drilling solutions.

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