System of Measurement System of Measurement |
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Decimal Size Equivalent Decimal Size Equivalent |
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For Use On For Use On |
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Length Class Length Class |
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| Jobbers' Length |
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Material Material |
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Finish Finish |
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Shank Type Shank Type |
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Bit Style Bit Style |
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| Spiral Flute | Straight Flute |
Individual/Set Individual/Set |
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Shank Size Shank Size |
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Flute Direction Flute Direction |
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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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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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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
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 |
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 | ||||||||
| 17/64" | 0.2656" | 4 1/8" | 2.12" | Round | 17/64" | Standard | 00000000 | 00000 |
| 9/32" | 0.2813" | 4 1/4" | 2.12" | Round | 9/32" | Standard | 00000000 | 00000 |
| 33/64" | 0.5156" | 6" | 2.12" | Round | 1/2" | Standard | 00000000 | 00000 |
| 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 |
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 | |
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Uncoated Carbide-Tipped Steel | |||||||||
| 17/32" | 0.5313" | 6" | 2.12" | Round | 17/32" | Notched | Rockwell C60 | 0000000 | 000000 |