System of Measurement System of Measurement |
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Drill Bit Size Drill Bit Size | Show |
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Drill Bit Size Drill Bit Size | Hide |
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For Use On For Use On |
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Decimal Size Equivalent Decimal Size Equivalent |
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Shank Type Shank Type |
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Reduced Round | Morse Taper |
Material Material |
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Length Class Length Class |
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Reduced Shank Length |
Individual/Set Individual/Set |
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Bit Style Bit Style |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Flute Direction Flute Direction |
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Right Hand |
Finish Finish |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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Morse Taper Number Morse Taper Number |
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Morse Taper Diameter Morse Taper Diameter |
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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.
Carbide-Tipped 1/2" Diameter Reduced-Shank Drill Bits

More wear resistant than cobalt steel and high-speed steel, these carbide-tipped bits maintain a sharper, harder edge at high temperatures. 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.
For technical drawings and 3-D models, click on a part number.
Shank | |||||||||
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Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Each | |
Inch | |||||||||
Uncoated Carbide-Tipped Steel | |||||||||
1 1/32" | 1.0313" | 6" | 2.1" | Reduced Round | 1/2" | Standard | Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 0000000 | 0000000 |
High-Speed Steel 3/4" 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.
For technical drawings and 3-D models, click on a part number.
Shank | |||||||||
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Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Each | |
Inch | |||||||||
Black-Oxide High-Speed Steel | |||||||||
1 1/32" | 1.0313" | 6" | 2.1" | Reduced Round | 3/4" | Standard | Steel, Iron, Stainless Steel | 0000000 | 000000 |
Cobalt Steel 3/4" 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.
For technical drawings and 3-D models, click on a part number.
Shank | |||||||||
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Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Each | |
Inch | |||||||||
Uncoated Cobalt Steel | |||||||||
1 1/32" | 1.0313" | 6" | 3" | Reduced Round | 3/4" | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 0000000 | 0000000 |
High-Speed Steel Morse Taper-Shank Drill Bits

Install the Morse taper shank directly into the tapered spindle on machines such as drill presses and lathes.
For technical drawings and 3-D models, click on a part number.
Morse Taper | ||||||||||
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Drill Bit Size | Decimal Size Equivalent | No. | Dia. | Overall Lg. | Max. Drilling Dp. | Shank Type | Point Style | For Use On | Each | |
Inch | ||||||||||
Black-Oxide High-Speed Steel | ||||||||||
1 1/32" | 1.0313" | 3 | 0.938" | 11 1/8" | 4.95" | Morse Taper | Standard | Steel, Iron, Stainless Steel | 00000000 | 000000 |