Drill America GLBCOX65/64 Cobalt Aircraft Extension Drill Bit, 5/64 x 6, 1 Count

Drill America Cobalt 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. 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.

Drill America Aircraft Extension Drills are manufactured to National Aerospace Standard 907 and are available in 6 in. and 12 in. overall lengths when extra reach is required. The round shanks allow for use with a wide variety of tool holding systems.

Interestingly, the gold oxide surface treatment used on these tools is thinner than the more commonly used black oxide. However, the performance of the gold oxide-coated tools is similar to that of uncoated tools. This surface treatment helps to identify the cobalt steel composition of the Drill America Cobalt Aircraft Extension Drills.

In summary, the key features of these drills include:

• Cobalt-enhanced high-speed steel composition for improved performance on harder metals
• 135° split point design that is self-centering and reduces thrust
• 118° standard point on sizes smaller than 1/16 in.
• Availability in 6 in. and 12 in. overall lengths to provide extra reach when needed
• Round shanks compatible with a wide range of tool holding systems
• Gold oxide surface treatment that is thinner than the more common black oxide, but provides similar performance to uncoated tools

These Drill America Cobalt Aircraft Extension Drills are designed to excel in demanding applications involving tough, high-strength materials like stainless steel, inconel, and titanium.

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