Drill America GLBCO Series 3/8 x 12 Cobalt Aircraft Extension Drill Bit

Drill America Cobalt Aircraft Extension Drills 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 gold oxide surface treatment is a thinner oxide layer compared to the more commonly used black oxide, and it provides similar performance to uncoated tools.

These Drill America Aircraft Extension Drills are manufactured to the National Aerospace Standard 907. The 135-degree split point is self-centering and helps to reduce thrust during drilling operations. For sizes smaller than 1/16 inch, the drills feature the standard 118-degree point.

The Drill America Aircraft Extension Drills are available in two overall lengths: 6 inches and 12 inches. The longer 12-inch version is particularly effective when additional reach is required for the drilling of tough, high tensile strength materials like stainless steel, inconel, and titanium.

The 135-degree split point tip on these drills helps to prevent the drill from walking, ensuring a more accurate and controlled drilling process. Additionally, the round shanks on the Drill America Aircraft Extension Drills allow for use with a wide variety of tool holding systems, providing flexibility and versatility in various drilling applications.

Overall, the Drill America Cobalt Aircraft Extension Drills offer a combination of performance, durability, and versatility, making them a suitable choice for drilling challenging materials that require precision and reliability.

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