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Cobalt Jobber-Length Drill Bits
Available1,767 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.
Material - Machining
NAS 907 Type J Straw/Bronze Finish Spiral-Flute Cobalt Jobber-Length Drill Bits
These drill bits meet National Aerospace Specification (NAS) 907 Type J for drill bits used in aircraft repair and production. They have a 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 Spiral-Flute Cobalt Jobber-Length Drill Bits
These drill bits have a straw/bronze finish that improves their wear resistance. They also have spiral flutes that evacuate chips as the bits drill into a workpiece.
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.
NAS 907 Type J TiN-Coated Cobalt Jobber-Length Drill Bits
These drill bits meet National Aerospace Specification (NAS) 907 Type J for drill bits used in aircraft repair and production. They have a TiN coating that protects them from wear and heat when drilling steel, stainless steel, and aluminum. They also have spiral flutes that evacuate chips as the bits drill into a workpiece.
NAS 907 Type J TiAlN-Coated Spiral-Flute Cobalt Jobber-Length Drill Bits
These drill bits meet National Aerospace Specification (NAS) 907 Type J for drill bits used in aircraft repair and production. They have a TiAlN coating that withstands high temperatures and protects the bits from wear during high-speed, dry machining applications with difficult-to-machine ferrous metals. They also have spiral flutes that evacuate chips as the bits drill into a workpiece.
TiN-Coated Spiral-Flute Cobalt Jobber-Length Drill Bits
The TiN coating on these drill bits protects them from wear and heat when drilling steel, stainless steel, and aluminum. The bits' spiral flutes evacuate chips as the bits drill into a workpiece.
Heavy-Duty TiN-Coated Spiral-Flute Cobalt Jobber-Length Drill Bits
These drill bits can drill into harder materials than would be possible with standard TiN-coated cobalt jobber-length drill bits. They are used for drilling tough, high-tensile, and work-hardened materials like titanium. The bits have a TiN coating that protects them from wear and heat, and they have spiral flutes that evacuate chips as the bits drill into a workpiece.
Black-Oxide Finish Spiral-Flute Cobalt Jobber-Length Drill Bits
These drill bits have a black-oxide finish that retains lubricants to improve the bits' wear resistance and chip flow. Black-oxide bits should only be used for drilling ferrous metals. Spiral-flute drill bits evacuate chips as the bits drill into a workpiece.
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.
TiAlN-Coated Parabolic-Flute Cobalt Jobber-Length Drill Bits
The TiAlN coating on these drill bits withstands high temperatures and protects the bits from wear during high-speed, dry machining applications with difficult-to-machine ferrous metals. 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.
TiN-Coated Parabolic-Flute Cobalt Jobber-Length Drill Bits
The TiN coating on these drill bits protects them from wear and heat when drilling steel, stainless steel, and aluminum. 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.
TiCN-Coated Parabolic-Flute Cobalt Jobber-Length Drill Bits
The TiCN coating on these drill bits protects them from wear and is harder and more wear-resistant than a TiN coating. 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.
TiCN-Coated Spiral-Flute Cobalt Jobber-Length Drill Bits
The TiCN coating on these drill bits protects them from wear and is harder and more wear-resistant than a TiN coating. Spiral-flute drill bits evacuate chips as the bits drill into a workpiece.
Left-Hand Bright Finish Spiral Flute Cobalt Jobber-Length Drill Bits
These bits have a left-hand drilling direction and can be used in reverse-drilling applications to remove broken screws from a hole. The bright finish is not affected when cutting edges are resharpened, and spiral flutes evacuate chips as the bit drills into a workpiece.