Drill America #28 Cobalt Short Threaded Shank Drill Bit Overall Length 1-1/4, TSD Series

Drill America #28 Cobalt Short Threaded Shank Drill Bit Overall Length 1-1/4, TSD Series

• Cobalt steel tools are similar to high-speed steel, but with more cobalt for improved performance when cutting harder metals such as stainless steel or nickel alloys
• Gold oxide is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools; performance is similar to uncoated tools
• Threaded shank is for use with threaded-spindle tools, often used in aerospace and automotive applications
• When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging
• Featured with 135 degrees heavy duty split point and surface treated for drilling hard, tough, high tensile strength materials