System of Measurement System of Measurement |
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Decimal Size Equivalent Decimal Size Equivalent | Show |
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Decimal Size Equivalent Decimal Size Equivalent | Hide |
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For Use On For Use On |
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Length Class Length Class |
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| Reduced Shank Length |
Shank Size Shank Size |
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Finish Finish |
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Material Material |
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Individual/Set Individual/Set |
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Overall Length Overall Length |
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Flute Direction Flute Direction |
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| Right Hand |
Maximum Drilling Depth Maximum Drilling Depth |
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Point Angle Point Angle |
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Shank Type Shank Type |
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 | Reduced Round |
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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Bit Style Bit Style |
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 | Spiral Flute |
DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement)  |
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Drill Bit Decimal Size Equivalents
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About Drill Bits
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1/2" Diameter Reduced-Shank Drill Bits
The shank has a smaller diameter than the tip, allowing you to drill large holes with machines that have small-capacity chucks. Also known as Silver and Deming bits, they have a 1/2” diameter shank.
Drill bits with flats on shank have three flat sides to prevent the bit from slipping in the drill chuck.
For technical drawings and 3-D models, click on a part number.
Cobalt Steel 1/2" Diameter Reduced-Shank Drill Bits
With better heat and wear resistance than high-speed steel, these cobalt steel bits can run up to 25% faster and have a longer tool life. The shank has a smaller diameter than the tip, allowing you to drill large holes with machines that have small-capacity chucks. A split point keeps the bit centered without a pilot hole. Also known as Silver and Deming bits, they have a 1/2” diameter shank.
Shank | |||||||||
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| Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Each | |
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Uncoated Cobalt Steel | |||||||||
| 61/64" | 0.9531" | 6" | 2.1" | Reduced Round | 1/2" | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 0000000 | 0000000 |