System of Measurement System of Measurement |
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Drill Bit Size Drill Bit Size |
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Point Style Point Style |
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| Standard |
Shank Size Shank Size |
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Decimal Size Equivalent Decimal Size Equivalent |
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Shank Type Shank Type |
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 | Round |
Material Material |
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For Use On For Use On |
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Bit Style Bit Style |
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 | Multi-Tooth |
Flute Direction Flute Direction |
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| Right Hand |
Individual/Set Individual/Set |
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Finish Finish |
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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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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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Drill Bit Decimal Size Equivalents
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About Drill Bits
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Fast-Cutting Smooth-Finish Drill Bits for Wood
Multiple outlining teeth bore clean, flat-bottom holes without chipping or splintering your surface—even when cutting across the grain. These bits are excellent for boring straight holes, overlapping holes, and holes on close centers in soft wood, veneer, and laminates. The center guide point prevents the bit from wandering. Also known as multispur bits or Forstner bits.
For technical drawings and 3-D models, click on a part number.
Shank | ||||||||
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| Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | Each | |
Inch | ||||||||
Uncoated Steel | ||||||||
| 1/4" | 0.25" | 4" | 2" | Round | 1/2" | Standard | 0000000 | 000000 |
| 5/16" | 0.3125" | 4" | 2" | Round | 1/2" | Standard | 0000000 | 00000 |
| 3/8" | 0.375" | 4" | 2" | Round | 1/2" | Standard | 0000000 | 00000 |
| 7/16" | 0.4375" | 4" | 2" | Round | 1/2" | Standard | 0000000 | 00000 |
| 1/2" | 0.5" | 5" | 3" | Round | 1/2" | Standard | 0000000 | 00000 |
| 9/16" | 0.5625" | 5" | 3" | Round | 1/2" | Standard | 0000000 | 00000 |
| 5/8" | 0.625" | 5" | 3" | Round | 1/2" | Standard | 0000000 | 00000 |
| 11/16" | 0.6875" | 5" | 3" | Round | 1/2" | Standard | 0000000 | 00000 |
| 3/4" | 0.75" | 6" | 4" | Round | 1/2" | Standard | 0000000 | 00000 |
| 13/16" | 0.8125" | 6" | 4" | Round | 1/2" | Standard | 0000000 | 00000 |
| 7/8" | 0.875" | 6" | 4" | Round | 1/2" | Standard | 0000000 | 00000 |
| 15/16" | 0.9375" | 6" | 4" | Round | 1/2" | Standard | 0000000 | 00000 |
| 1" | 1" | 6" | 4" | Round | 1/2" | Standard | 0000000 | 00000 |
| 1 1/16" | 1.0625" | 6" | 4" | Round | 1/2" | Standard | 0000000 | 00000 |
| 1 1/8" | 1.125" | 6" | 4" | Round | 1/2" | Standard | 0000000 | 00000 |
| 1 3/16" | 1.1875" | 6" | 4" | Round | 1/2" | Standard | 0000000 | 00000 |
| 1 1/4" | 1.25" | 6" | 4" | Round | 1/2" | Standard | 0000000 | 00000 |
| 1 5/16" | 1.3125" | 6" | 4" | Round | 1/2" | Standard | 0000000 | 00000 |
| 1 3/8" | 1.375" | 6" | 4" | Round | 1/2" | Standard | 0000000 | 00000 |
| 1 7/16" | 1.4375" | 6" | 4" | Round | 1/2" | Standard | 0000000 | 00000 |
| 1 1/2" | 1.5" | 6" | 4" | Round | 1/2" | Standard | 0000000 | 00000 |
| 1 9/16" | 1.5625" | 6" | 4" | Round | 1/2" | Standard | 0000000 | 00000 |
| 1 5/8" | 1.625" | 6" | 4" | Round | 1/2" | Standard | 0000000 | 00000 |
| 1 11/16" | 1.6875" | 6" | 4" | Round | 1/2" | Standard | 0000000 | 00000 |
| 1 3/4" | 1.75" | 6" | 4" | Round | 1/2" | Standard | 0000000 | 00000 |
| 1 13/16" | 1.8125" | 6" | 4" | Round | 1/2" | Standard | 0000000 | 00000 |
| 1 7/8" | 1.875" | 6" | 4" | Round | 1/2" | Standard | 0000000 | 00000 |
| 1 15/16" | 1.9375" | 6" | 4" | Round | 1/2" | Standard | 0000000 | 00000 |
| 2" | 2" | 6" | 4" | Round | 1/2" | Standard | 0000000 | 00000 |
| 2 1/8" | 2.125" | 6" | 4" | Round | 1/2" | Standard | 0000000 | 00000 |
| 2 1/4" | 2.25" | 6" | 4" | Round | 1/2" | Standard | 0000000 | 00000 |
| 2 3/8" | 2.375" | 6" | 4" | Round | 1/2" | Standard | 0000000 | 00000 |
| 2 1/2" | 2.5" | 6" | 4" | Round | 1/2" | Standard | 0000000 | 00000 |
| 2 3/4" | 2.75" | 6" | 4" | Round | 1/2" | Standard | 0000000 | 00000 |
| 2 7/8" | 2.875" | 6" | 4" | Round | 1/2" | Standard | 0000000 | 000000 |
| 3" | 3" | 6" | 4" | Round | 1/2" | Standard | 0000000 | 000000 |