System of Measurement System of Measurement |
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Length Class Length Class |
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Short Length |
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Extended Length |
Material Material |
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Finish Finish |
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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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Flute Direction Flute Direction |
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Right Hand |
Shank Type Shank Type |
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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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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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Individual/Set Individual/Set |
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Specifications Met Specifications Met |
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Drill Bit Decimal Size Equivalents
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About Drill Bits
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Short-Length Drill Bits

Also known as screw-machine and stub-length bits, these provide maximum rigidity for drilling straighter holes than jobbers'- and maintenance-length drill bits.
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 | Each | |||||||||
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Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | Specifications Met | For Use On | Each | |
Letter | ||||||||||
Black-Oxide High-Speed Steel | ||||||||||
O | 0.316" | 3" | 1.05" | Round | 0.316" | Split | NAS907 Type C | Steel, Iron, Stainless Steel | 00000000 | 00000 |
S | 0.348" | 3 1/8" | 1.05" | Round | 0.348" | Split | NAS907 Type C | Steel, Iron, Stainless Steel | 00000000 | 0000 |
Extended-Length Drill Bits

Access hard-to-reach spots and drill deep holes.
Black-oxide drill bits produce less friction than uncoated 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 | |||||||||
Black-Oxide High-Speed Steel | |||||||||
3/64" | 0.0469" | 2 1/4" | 1.05" | Round | 3/64" | Standard | Steel, Iron, Stainless Steel | 000000000 | 00000 |
Wire Gauge | |||||||||
Black-Oxide High-Speed Steel | |||||||||
56 ga | 0.0465" | 2 1/4" | 1.05" | Round | 0.0465" | Standard | Steel, Iron, Stainless Steel | 00000000 | 0000 |
Short-Length Cobalt Steel Drill Bits

Also known as screw-machine and stub-length bits, these provide maximum rigidity for drilling straighter holes than jobbers'-length drill bits. Made of cobalt steel, which has better heat and wear resistance than high-speed steel, they can run up to 25% faster and have a longer tool life.
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 | Each | ||||||||
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Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Each | |
Letter | |||||||||
Uncoated Cobalt Steel | |||||||||
F | 0.257" | 2 5/8" | 1.05" | Round | 0.257" | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 000000000 | 00000 |