Drill America GLBCO Series 11/64 x 6 Cobalt Aircraft Extension Drill Bit

Drill America Cobalt Aircraft Extension Drills are manufactured to National Aerospace Standard 907 and are designed for improved performance when cutting harder metals such as stainless steel or nickel alloys. These drills are similar to high-speed steel, but with more cobalt content.

The 135-degree split point on these drills is self-centering, which helps to reduce thrust during the drilling operation. For sizes smaller than 1/16 inch, a standard 118-degree point is used instead.

Drill America Aircraft Extension Drills are available in two overall lengths: 6 inches and 12 inches. The longer 12-inch version is particularly useful when extra reach is required for the drilling task.

One of the key features of these drills is their gold oxide surface treatment. This is a thinner oxide coating compared to the more common black oxide typically used on cobalt steel tools. However, the performance of the gold oxide-treated drills is comparable to uncoated tools.

The round shanks on these drills allow them to be used with a wide variety of tool holding systems, providing flexibility in their application.

These Drill America Cobalt Aircraft Extension Drills are effective in drilling tough, high-tensile-strength materials like stainless steel, Inconel, and titanium. The 135-degree split point tip helps to prevent the drill from wandering or "walking" during the drilling process, improving accuracy and control.

In summary, the key features of the Drill America Cobalt Aircraft Extension Drills include:

• Manufactured to National Aerospace Standard 907
• 135-degree split point for self-centering and reduced thrust
• 118-degree standard point for sizes smaller than 1/16 inch
• Available in 6-inch and 12-inch overall lengths
• Gold oxide surface treatment with performance comparable to uncoated tools
• Round shanks for use with various tool holding systems
• Effective in drilling tough, high-tensile-strength materials like stainless steel, Inconel, and titanium
• 135-degree split point tip to prevent drill walking

These drills are designed to provide reliable and efficient performance when working with challenging materials, making them a valuable tool for aerospace, industrial, and other applications requiring precision drilling.

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