Quick Change Cobalt Drill Bit for DIY Enthusiasts

The COHEX Series by Drill America is designed to provide exceptional performance in a wide range of drilling applications. These drill bits are crafted from heat-resistant cobalt and meticulously ground to a heavy-duty 135-degree split point, ensuring efficient self-centering and reduced thrust during use.

The common flute and overall length of these drill bits allow for minimal adjustment during tool changes, enhancing productivity and workflow. The precision-ground construction ensures a high degree of concentricity between the shank and body diameter, delivering consistent and accurate drilling results.

These drill bits are ideal for use in tough, high-tensile-strength materials, as well as low and medium-tensile-strength materials. The 1/4-inch hex shank can be easily used in quick-change impact drivers, providing versatility and convenience for the user.

The length between the chucking slot on the shank and the end of the shank is a standard 3/8 inches, ensuring compatibility with a wide range of drill chucks and power tools.

Cobalt steel tools, such as those in the COHEX Series, share similarities with high-speed steel tools but boast improved performance when cutting harder metals, including stainless steel and nickel alloys. This is due to the increased cobalt content, which enhances the tool's resistance to wear and heat during use.

The gold oxide surface treatment applied to these drill bits is a thinner oxide layer compared to the more commonly used black oxide. This treatment not only helps to identify the cobalt steel composition but also provides similar performance to uncoated tools.

The COHEX Series by Drill America is manufactured to the National Aerospace Standard 907, ensuring that these drill bits meet the rigorous quality and performance requirements of the aerospace industry. This certification underscores the attention to detail and commitment to excellence that goes into the design and production of these exceptional drilling tools.

In summary, the COHEX Series by Drill America offers a range of features and benefits that make it an excellent choice for a wide variety of drilling applications. From the heat-resistant cobalt construction and precision-ground geometry to the versatile 1/4-inch hex shank and compliance with aerospace standards, these drill bits are designed to deliver reliable and consistent performance, even in the most demanding environments.

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