System of Measurement System of Measurement |
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Decimal Size Equivalent Decimal Size Equivalent |
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Length Class Length Class |
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Jobbers' Length |
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Extended 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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Material Material |
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Shank Type Shank Type |
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![]() | Round |
Bit Style Bit Style |
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Spiral Flute | Straight Flute |
Flute Direction Flute Direction |
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Right Hand |
Individual/Set Individual/Set |
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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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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Finish Finish |
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For Maximum Hardness For Maximum Hardness |
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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.
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 | |
Wire Gauge | |||||||||
Black-Oxide High-Speed Steel | |||||||||
46 ga | 0.081" | 4 1/4" | 2.12" | Round | 0.081" | Standard | Steel, Iron, Stainless Steel | 00000000 | 00000 |
45 ga | 0.082" | 4 1/4" | 2.12" | Round | 0.082" | Standard | Steel, Iron, Stainless Steel | 00000000 | 0000 |
44 ga | 0.086" | 4 1/4" | 2.12" | Round | 0.086" | Standard | Steel, Iron, Stainless Steel | 00000000 | 0000 |
Carbide-Tipped Drill Bits for Hardened Steel

The straight flutes and notched point withstand the heavy pressure necessary to penetrate hard steel. These carbide-tipped bits maintain their sharp edges when drilling abrasive material. Because they aren’t as brittle as solid carbide bits, they can be used in less rigid setups, such as a hand-held drill. They are jobbers' length and have the rigidity and length required for most hand-held drilling and machine tool applications.
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 Max. Hardness | Each | |
Inch | |||||||||
Uncoated Carbide-Tipped Steel | |||||||||
17/32" | 0.5313" | 6" | 2.12" | Round | 17/32" | Notched | Rockwell C60 | 0000000 | 000000 |
Drill Bits for Plastic

The sharp point allows for gradual penetration to reduce friction and eliminate cracking and chipping when drilling in plastic. These bits are jobbers' length and have the rigidity and length required for most applications.
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 | Each | |
Inch | ||||||||
Uncoated High-Speed Steel | ||||||||
33/64" | 0.5156" | 6" | 2.12" | Round | 1/2" | Standard | 00000000 | 000000 |
17/32" | 0.5313" | 6" | 2.12" | Round | 1/2" | Standard | 00000000 | 00000 |
35/64" | 0.5469" | 6" | 2.12" | Round | 1/2" | Standard | 00000000 | 00000 |
9/16" | 0.5625" | 6" | 2.12" | Round | 1/2" | Standard | 00000000 | 00000 |
Letter | ||||||||
Uncoated High-Speed Steel | ||||||||
F | 0.257" | 4 1/8" | 2.12" | Round | 0.257" | Standard | 000000000 | 0000 |
G | 0.261" | 4 1/8" | 2.12" | Round | 0.261" | Standard | 000000000 | 0000 |
H | 0.266" | 4 1/8" | 2.12" | Round | 0.266" | Standard | 000000000 | 0000 |
I | 0.272" | 4 1/8" | 2.12" | Round | 0.272" | Standard | 000000000 | 0000 |
J | 0.277" | 4 1/8" | 2.12" | Round | 0.277" | Standard | 000000000 | 0000 |
K | 0.281" | 4 1/4" | 2.12" | Round | 0.281" | Standard | 000000000 | 0000 |
L | 0.29" | 4 1/4" | 2.12" | Round | 0.29" | Standard | 000000000 | 0000 |