Drill America 3/8 Quick Change Cobalt Drill Bit with Hex Shank, COHEX Series

The COHEX Series drills from Drill America are designed to provide exceptional performance and durability. Crafted with heat-resistant cobalt, these drills feature a heavy-duty 135-degree split point that is precision ground for a high degree of concentricity between the shank and body diameter. This ensures minimal adjustment is required during tool changes, enhancing efficiency and productivity.

Ideal for drilling in tough, high-tensile-strength materials, these drills also excel in low and medium-tensile-strength applications. The common flute and overall length design further contributes to the ease of use, minimizing the need for adjustments during tool changes.

The 1/4-inch hex shank of these drills allows for compatibility with quick-change impact drivers, providing versatility and convenience. The length between the chucking slot on the shank and the end of the shank is a standard 3/8 inches, ensuring a secure and reliable fit.

Cobalt steel, the material used in these tools, is similar to high-speed steel but with an increased cobalt content. This enhancement improves the performance when cutting harder metals, such as stainless steel or nickel alloys, making these drills well-suited for a wide range of applications.

The gold oxide surface treatment is thinner than the more commonly used black oxide, providing a distinct visual cue to identify the cobalt steel composition. This surface treatment does not compromise the performance, which remains on par with uncoated tools.

Manufactured to the National Aerospace Standard 907, these COHEX Series drills from Drill America are engineered to meet the high standards required for aerospace and other demanding industrial applications. The 135-degree split point, in comparison to the conventional 118-degree tip, offers superior self-centering capabilities and reduces the risk of the drill "walking" during operation, enhancing precision and control.

Overall, the COHEX Series drills from Drill America represent a robust and versatile solution for drilling in a wide range of materials, thanks to their heat-resistant cobalt construction, precision ground design, and compatibility with quick-change impact drivers. These drills are designed to deliver exceptional performance and efficiency, making them a reliable choice for professionals and DIY enthusiasts alike.

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