Drill America GLBCOX617/64 17/64 x 6 Cobalt Aircraft Extension Drill Bit, GLBCO Series

Drill America's Aircraft Extension Drills are similar to high-speed steel, but with more cobalt for improved performance when cutting harder metals such as stainless steel or nickel alloys. These drills are manufactured to the National Aerospace Standard 907 and feature a 135° split point that is self-centering and reduces thrust. Sizes smaller than 1/16 inch have the standard 118° point.

The gold oxide surface treatment used on these drills is thinner than the typical black oxide, yet the performance is comparable to uncoated tools. This surface treatment helps to identify the cobalt steel construction of the Drill America Aircraft Extension Drills.

These drills are available in two overall lengths - 6 inches and 12 inches - to accommodate situations where extra reach is required. They are particularly effective in drilling tough, high-tensile strength materials like stainless steel, inconel, and titanium.

The 135° split point tip on the Drill America Aircraft Extension Drills plays a crucial role in preventing the drill from wandering or "walking" during the drilling process. This self-centering feature enhances the accuracy and precision of the drilling operation.

The round shanks of these drills allow for use with a wide variety of tool holding systems, providing versatility and flexibility in the workshop or production environment. This design feature ensures compatibility with many different machine tools and workholding setups.

In summary, the Drill America Aircraft Extension Drills offer several advantages that make them well-suited for demanding drilling applications in the aerospace and other high-performance industries. The cobalt-enhanced high-speed steel construction, 135° split point, and gold oxide surface treatment contribute to their superior performance and durability when working with tough, high-strength materials.

Whether the requirement is for a 6-inch or 12-inch overall length, the Drill America Aircraft Extension Drills are engineered to deliver accurate, reliable, and efficient drilling results, even in the most challenging of environments.

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