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Length Class Length Class |
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Extended Length |
Maximum Drilling Depth Maximum Drilling Depth | Show |
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Maximum Drilling Depth Maximum Drilling Depth | Hide |
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Point Style Point Style |
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Standard |
Point Angle Point Angle |
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Material Material |
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Individual/Set Individual/Set |
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Shank Type Shank Type |
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![]() | Round |
Flute Direction Flute Direction |
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Right Hand |
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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Bit Style Bit Style |
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![]() | Spiral Flute |
Drill Bit Decimal Size Equivalents
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About Drill Bits
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Extended-Length Drill Bits

Black Oxide
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 | |||||||||
25/64" | 0.3906" | 7" | 3.78" | Round | 25/64" | Standard | Steel, Iron, Stainless Steel | 000000000 | 000000 |
Letter | |||||||||
Black-Oxide High-Speed Steel | |||||||||
X | 0.397" | 7" | 3.78" | Round | 0.397" | Standard | Steel, Iron, Stainless Steel | 0000000 | 00000 |
Extended-Length Carbide-Tipped Drill Bits

Access hard-to-reach spots and drill deep holes. More wear resistant than cobalt steel and high-speed steel, these carbide-tipped bits maintain a sharper, harder edge at high temperatures for excellent performance on abrasive material, such as plastic. Because they aren’t as brittle as solid carbide bits, they can be used in less rigid setups, such as a hand-held drill.
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 Carbide-Tipped Steel | |||||||||
27/64" | 0.4219" | 7 1/4" | 3.78" | Round | 27/64" | Standard | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |