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Cobalt Jobber-Length Drill Bits
Available2 products
Cobalt jobber-length drill bits tolerate higher drilling speeds and are harder and more wear-resistant than high-speed steel drill bits. They provide some shock absorption and can be used in handheld power tools. Jobber-length drill bits are the most commonly used drill-bit length. They provide a good balance of strength and accuracy when drilling into a variety of materials.
Drill Bit Size
Heavy-Duty Straw/Bronze Finish Spiral-Flute Cobalt Jobber-Length Drill Bits
These drill bits can drill into harder materials than would be possible with standard cobalt jobber-length drill bits with a straw/bronze finish. They are used for drilling tough, high-tensile, and work-hardened materials like titanium. The bits have a straw/bronze finish that improves their wear resistance, and they have spiral flutes that evacuate chips as the bits drill into a workpiece.
Fractional Inch + 135 ° Drill Bit Point Angle + Split Point
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Letter + 135 ° Drill Bit Point Angle + Split Point
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Metric + 135 ° Drill Bit Point Angle + Split Point
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Wire + 135 ° Drill Bit Point Angle + Split Point
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Straw/Bronze Finish Parabolic-Flute Cobalt Jobber-Length Drill Bits
These drill bits have a straw/bronze finish that improves their wear resistance. Parabolic-flute drill bits have wide, deep flutes that improve chip flow and heat dissipation, which means feed rates do not need to be reduced as the drills move deeper into the workpiece.
Fractional Inch + 135 ° Drill Bit Point Angle + Split Point
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Letter + 135 ° Drill Bit Point Angle + Split Point
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Metric + 135 ° Drill Bit Point Angle + Split Point
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Wire + 135 ° Drill Bit Point Angle + Split Point
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