Drill America DWDCO Series 1/4 Cobalt Drill Bits (Pack of 12)

The Drill America jobber length drill bits are manufactured to the National Aerospace Standard 907. These drill bits are made of heat-resistant cobalt, which allows them to display a higher red hardness. This permits speeds up to 30 percent greater than High-Speed Steel drills, making them especially effective in drilling tough, high-tensile-strength materials like PH stainless steel, Inconel, and titanium.

Cobalt steel tools are similar to high-speed steel, but they contain more cobalt for improved performance when cutting harder metals such as stainless steel or nickel alloys. The gold oxide surface treatment used to identify these cobalt steel tools is a thinner oxide coating compared to the typical black oxide. The performance of the gold oxide-coated tools is similar to that of the uncoated tools.

The round shanks of these drill bits allow them to be used with a wide variety of toolholding systems. When the drill bits are run in a counterclockwise direction (right-hand cut), their spiral fluted design helps evacuate chips up and out of the cut, reducing the risk of clogging.

All of these Drill America jobber length drill bits are manufactured to the rigorous National Aerospace Standard 907, ensuring consistent quality and performance.

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