System of Measurement System of Measurement |
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Length Class Length Class |
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Jobbers' Length |
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Extended Length |
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Reduced Shank Length |
For Use On For Use On |
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Maximum Drilling Depth Maximum Drilling Depth | Show |
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Maximum Drilling Depth Maximum Drilling Depth | Hide |
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Finish Finish |
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Material Material |
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Flute Direction Flute Direction |
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Right Hand |
Shank Type Shank Type |
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Round | Reduced Round |
Bit Style Bit Style |
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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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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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Extended-Length Drill Bits

Access hard-to-reach spots and drill deep holes.
Titanium-nitride (TiN) coated drill bits last longer and can drill at higher speeds than uncoated and black-oxide drill bits.
For technical drawings and 3-D models, click on a part number.
Shank | |||||||||
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Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Each | |
Inch | |||||||||
Titanium-Nitride (TiN) Coated High-Speed Steel | |||||||||
11/64" | 0.1719" | 5 3/4" | 3.03" | Round | 11/64" | Standard | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 000000000 | 00000 |
Chip-Clearing Drill Bits

These jobbers'-length bits have the rigidity and length required for most applications. The flutes are designed to lift chips out of the hole, reducing clogging and improving coolant flow.
Black-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.
Shank | |||||||||
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Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Each | |
Inch—Spiral Flute | |||||||||
Black-Oxide High-Speed Steel | |||||||||
15/32" | 0.4688" | 6" | 3.03" | Round | 15/32" | Split | Steel, Iron, Stainless Steel | 00000000 | 000000 |
Extended-Length Cobalt Steel Drill Bits

Access hard-to-reach spots and drill deep holes. 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 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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Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Each | |
Inch | |||||||||
Uncoated Cobalt Steel | |||||||||
11/64" | 0.1719" | 5 3/4" | 3.03" | Round | 11/64" | Split | Steel, Hardened Steel, Iron, Stainless Steel, Nickel | 00000000 | 000000 |
1/4" 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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Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Each | |
Inch | |||||||||
Black-Oxide High-Speed Steel | |||||||||
29/64" | 0.4531" | 4 3/4" | 3.03" | Reduced Round | 1/4" | Standard | Steel, Iron, Stainless Steel | 0000000 | 000000 |