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Finish Finish |
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System of Measurement System of Measurement |
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Length Class Length Class |
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![]() | Jobbers' Length |
Point Style Point Style |
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Split |
Maximum Drilling Depth Maximum Drilling Depth | Show |
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Maximum Drilling Depth Maximum Drilling Depth | Hide |
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Shank Size Shank Size |
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For Use On For Use On |
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Flute Direction Flute Direction |
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Left Hand |
Shank Type Shank Type |
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Overall Length Overall Length |
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Material Material |
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Individual/Set Individual/Set |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Point Angle Point Angle |
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Decimal Size Equivalent Decimal Size Equivalent |
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Bit Style Bit Style |
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![]() | Spiral Flute |
REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Drill Bit Decimal Size Equivalents
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About Drill Bits
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High-Speed Steel Left-Hand Drill Bits

Black and Gold Oxide
Also known as reverse-flute bits, the flutes spiral in the opposite direction of other bits. Use in counterclockwise drilling applications such as removing broken screws. These bits are jobbers' length and have the rigidity and length required for most applications.
Black-oxide and black-and-gold-oxide drill bits produce less friction than uncoated drill bits.
Drill bits with a split point keep centered without a pilot hole.
For technical drawings and 3-D models, click on a part number.
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Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Each | |
Inch | |||||||||
Black-and-Gold-Oxide High-Speed Steel | |||||||||
1/2" | 0.5" | 6" | 4.45" | Round | 1/2" | Split | Steel, Iron, Stainless Steel | 00000000 | 000000 |