Cobalt Aircraft Extension Drill Bit, GLBCO Series

Drill America Cobalt Aircraft Extension Drills are manufactured to National Aerospace Standard 907 and are similar to high-speed steel, but with more cobalt for improved performance when cutting harder metals such as stainless steel or nickel alloys. The 135° split point is self-centering and reduces thrust, while sizes smaller than 1/16 in. have the 118° standard point.

These drills are effective in drilling tough, high tensile strength materials like stainless steel, inconel, and titanium. The 135° split point tip prevents the drill from walking, and the round shanks allow for use with a wide variety of tool holding systems.

Gold oxide is a thinner oxide surface treatment than black oxide, which is typically used to identify cobalt steel tools. However, the performance of the gold oxide-treated tools is similar to that of uncoated tools.

Drill America Aircraft Extension Drills are available in two overall lengths: 6 inches and 12 inches. The 6-inch version is designed for drilling where extra length for reach is required.

In summary, Drill America Cobalt Aircraft Extension Drills are high-performance tools that are well-suited for drilling challenging materials such as stainless steel, inconel, and titanium. Their unique features, including the 135° split point and gold oxide surface treatment, make them a versatile choice for a variety of aerospace and industrial applications.

product information: