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About Drill Bits
Compare material, finish, length class, and decimal size equivalents.
About Reamers
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Maintenance-Length Drill Bits
Also known as mechanics’ bits, these are shorter and more rigid than jobbers' bits but longer than short‐length bits. A split point keeps the bit centered without a pilot hole.
Drill bits with flats on shank have three flat sides to prevent the bit from slipping in the drill chuck.
For technical drawings and 3-D models, click on a part number.
Shank | Each | Pkg. | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | Features | For Use On | Each | Pkg. Qty. | Pkg. | ||
Inch | |||||||||||||
Black-and-Gold-Oxide High-Speed Steel | |||||||||||||
1/16" | 0.0625" | 1 7/8" | 0.88" | Round | 1/16" | Split | __ | Steel, Iron, Stainless Steel | 000000000 | 00000 | __ | 000000 | 00 |
| 5/64" | 0.0781" | 2" | 1" | Round | 5/64" | Split | __ | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 3/32" | 0.0938" | 2 1/4" | 1.25" | Round | 3/32" | Split | __ | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 7/64" | 0.1094" | 2 3/8" | 1.31" | Round | 7/64" | Split | __ | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 1/8" | 0.125" | 2 1/2" | 1.44" | Round | 1/8" | Split | __ | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 9/64" | 0.1406" | 2 5/8" | 1.56" | Round | 9/64" | Split | __ | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 5/32" | 0.1563" | 2 3/4" | 1.69" | Round | 5/32" | Split | __ | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 11/64" | 0.1719" | 2 7/8" | 1.81" | Round | 11/64" | Split | __ | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 3/16" | 0.1875" | 3" | 1.75" | Round | 3/16" | Split | Flats on Shank | Steel, Iron, Stainless Steel | 00000000 | 0000 | 12 | 0000000 | 000000 |
| 13/64" | 0.2031" | 3 1/8" | 1.81" | Round | 13/64" | Split | Flats on Shank | Steel, Iron, Stainless Steel | 00000000 | 0000 | 12 | 00000000 | 00000 |
| 7/32" | 0.2188" | 3 1/4" | 1.87" | Round | 7/32" | Split | Flats on Shank | Steel, Iron, Stainless Steel | 00000000 | 0000 | 12 | 00000000 | 00000 |
| 15/64" | 0.2344" | 3 3/8" | 1.93" | Round | 15/64" | Split | Flats on Shank | Steel, Iron, Stainless Steel | 00000000 | 0000 | 12 | 00000000 | 00000 |
| 1/4" | 0.25" | 3 1/2" | 1.87" | Round | 1/4" | Split | Flats on Shank | Steel, Iron, Stainless Steel | 00000000 | 0000 | 12 | 00000000 | 00000 |
| 17/64" | 0.2656" | 3 5/8" | 2" | Round | 17/64" | Split | Flats on Shank | Steel, Iron, Stainless Steel | 00000000 | 0000 | 12 | 00000000 | 00000 |
| 9/32" | 0.2813" | 3 3/4" | 2.18" | Round | 9/32" | Split | Flats on Shank | Steel, Iron, Stainless Steel | 00000000 | 0000 | 12 | 00000000 | 00000 |
| 19/64" | 0.2969" | 3 7/8" | 2.34" | Round | 19/64" | Split | Flats on Shank | Steel, Iron, Stainless Steel | 00000000 | 0000 | __ | 000000 | 00 |
| 5/16" | 0.3125" | 4" | 2.46" | Round | 5/16" | Split | Flats on Shank | Steel, Iron, Stainless Steel | 00000000 | 0000 | 6 | 00000000 | 00000 |
| 21/64" | 0.3281" | 4 1/8" | 2.48" | Round | 21/64" | Split | Flats on Shank | Steel, Iron, Stainless Steel | 00000000 | 0000 | 6 | 00000000 | 00000 |
| 11/32" | 0.3438" | 4 1/8" | 2.5" | Round | 11/32" | Split | Flats on Shank | Steel, Iron, Stainless Steel | 00000000 | 0000 | 6 | 00000000 | 00000 |
| 23/64" | 0.3594" | 4 1/4" | 2.56" | Round | 23/64" | Split | Flats on Shank | Steel, Iron, Stainless Steel | 00000000 | 0000 | 6 | 00000000 | 00000 |
| 3/8" | 0.375" | 4 1/4" | 2.56" | Round | 3/8" | Split | Flats on Shank | Steel, Iron, Stainless Steel | 00000000 | 0000 | 6 | 00000000 | 00000 |
| 25/64" | 0.3906" | 4 3/8" | 2.62" | Round | 25/64" | Split | Flats on Shank | Steel, Iron, Stainless Steel | 00000000 | 0000 | 6 | 00000000 | 00000 |
| 13/32" | 0.4063" | 4 3/8" | 2.68" | Round | 13/32" | Split | Flats on Shank | Steel, Iron, Stainless Steel | 00000000 | 0000 | 6 | 00000000 | 00000 |
| 27/64" | 0.4219" | 4 1/2" | 2.75" | Round | 27/64" | Split | Flats on Shank | Steel, Iron, Stainless Steel | 00000000 | 00000 | __ | 000000 | 00 |
| 7/16" | 0.4375" | 4 1/2" | 2.81" | Round | 7/16" | Split | Flats on Shank | Steel, Iron, Stainless Steel | 00000000 | 00000 | 6 | 00000000 | 00000 |
| 29/64" | 0.4531" | 4 5/8" | 2.87" | Round | 29/64" | Split | Flats on Shank | Steel, Iron, Stainless Steel | 00000000 | 00000 | __ | 000000 | 00 |
| 15/32" | 0.4688" | 4 3/4" | 3" | Round | 15/32" | Split | Flats on Shank | Steel, Iron, Stainless Steel | 00000000 | 00000 | __ | 000000 | 00 |
| 31/64" | 0.4844" | 4 7/8" | 3.21" | Round | 31/64" | Split | Flats on Shank | Steel, Iron, Stainless Steel | 00000000 | 00000 | __ | 000000 | 00 |
| 1/2" | 0.5" | 5" | 3.34" | Round | 1/2" | Split | Flats on Shank | Steel, Iron, Stainless Steel | 00000000 | 00000 | 6 | 00000000 | 00000 |
Drill Bits
Black and Gold Oxide
Standard
Split
These jobbers'-length bits have the rigidity and length required for most applications.
Black-oxide and black-and-gold-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 | Pkg. | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | Specifications Met | For Use On | Each | Pkg. Qty. | Pkg. | ||
Metric | |||||||||||||
Black-and-Gold Oxide High-Speed Steel | |||||||||||||
| 1.0 mm | 0.0394" | 41mm | 14.2mm | Round | 1mm | Standard | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 00000 | 10 | 000000000 | 000000 |
| 1.05 mm | 0.0413" | 41mm | 14.2mm | Round | 1.1mm | Standard | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 1.1 mm | 0.0433" | 44mm | 15.8mm | Round | 1.1mm | Standard | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 1.15 mm | 0.0453" | 44mm | 15.8mm | Round | 1.2mm | Standard | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 1.2 mm | 0.0472" | 48mm | 19mm | Round | 1.2mm | Standard | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 1.25 mm | 0.0492" | 48mm | 19mm | Round | 1.3mm | Standard | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 1.3 mm | 0.0512" | 48mm | 19mm | Round | 1.3mm | Standard | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 1.35 mm | 0.0531" | 48mm | 19mm | Round | 1.4mm | Standard | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 1.4 mm | 0.0551" | 48mm | 19mm | Round | 1.4mm | Standard | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 1.45 mm | 0.0571" | 48mm | 19mm | Round | 1.5mm | Standard | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 1.5 mm | 0.0591" | 48mm | 19mm | Round | 1.5mm | Standard | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 1.55 mm | 0.061" | 48mm | 19mm | Round | 1.6mm | Standard | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 1.6 mm | 0.063" | 48mm | 19mm | Round | 1.6mm | Standard | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 1.65 mm | 0.065" | 51mm | 22.2mm | Round | 1.7mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 1.7 mm | 0.0669" | 51mm | 22.2mm | Round | 1.7mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 1.75 mm | 0.0689" | 51mm | 22.2mm | Round | 1.8mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 1.8 mm | 0.0709" | 51mm | 22.2mm | Round | 1.8mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 1.9 mm | 0.0748" | 51mm | 22.2mm | Round | 1.9mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 2.0 mm | 0.0787" | 51mm | 22.2mm | Round | 2mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 2.05 mm | 0.0807" | 54mm | 23.8mm | Round | 2.1mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 2.1 mm | 0.0827" | 54mm | 23.8mm | Round | 2.1mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 2.2 mm | 0.0866" | 57mm | 25.4mm | Round | 2.2mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 2.3 mm | 0.0906" | 57mm | 25.4mm | Round | 2.3mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 2.4 mm | 0.0945" | 60mm | 34.1mm | Round | 2.4mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | 10 | 00000000 | 00000 |
| 2.5 mm | 0.0984" | 60mm | 34.1mm | Round | 2.5mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 2.6 mm | 0.1024" | 64mm | 36.9mm | Round | 2.6mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 2.7 mm | 0.1063" | 64mm | 36.9mm | Round | 2.7mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 2.8 mm | 0.1102" | 67mm | 37.3mm | Round | 2.8mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 2.9 mm | 0.1142" | 70mm | 38.1mm | Round | 2.9mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 3.0 mm | 0.1181" | 70mm | 38.1mm | Round | 3mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 3.1 mm | 0.122" | 70mm | 38.1mm | Round | 3.1mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 3.2 mm | 0.126" | 70mm | 38.1mm | Round | 3.2mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 3.3 mm | 0.1299" | 73mm | 41.3mm | Round | 3.3mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 3.4 mm | 0.1339" | 73mm | 41.3mm | Round | 3.4mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 3.5 mm | 0.1378" | 73mm | 41.3mm | Round | 3.5mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 3.6 mm | 0.1417" | 76mm | 44.5mm | Round | 3.6mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 3.7 mm | 0.1457" | 76mm | 44.5mm | Round | 3.7mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 3.8 mm | 0.1496" | 76mm | 44.5mm | Round | 3.8mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 3.9 mm | 0.1535" | 79mm | 47.6mm | Round | 3.9mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 4.0 mm | 0.1575" | 83mm | 49.2mm | Round | 4mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 4.1 mm | 0.1614" | 83mm | 49.2mm | Round | 4.1mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 4.2 mm | 0.1654" | 83mm | 49.2mm | Round | 4.2mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | 10 | 00000000 | 00000 |
| 4.3 mm | 0.1693" | 83mm | 49.2mm | Round | 4.3mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 4.4 mm | 0.1732" | 86mm | 50.8mm | Round | 4.4mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 4.5 mm | 0.1772" | 86mm | 50.8mm | Round | 4.5mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 4.6 mm | 0.1811" | 86mm | 50.8mm | Round | 4.6mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 4.7 mm | 0.185" | 89mm | 58.3mm | Round | 4.7mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 4.8 mm | 0.189" | 89mm | 58.3mm | Round | 4.8mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 4.9 mm | 0.1929" | 92mm | 61.1mm | Round | 4.9mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 5.0 mm | 0.1968" | 92mm | 61.1mm | Round | 5mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 5.1 mm | 0.2008" | 92mm | 61.1mm | Round | 5.1mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 5.2 mm | 0.2047" | 95mm | 62.3mm | Round | 5.2mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 5.3 mm | 0.2087" | 95mm | 62.3mm | Round | 5.3mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 5.4 mm | 0.2126" | 95mm | 62.3mm | Round | 5.4mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 5.5 mm | 0.2165" | 95mm | 62.3mm | Round | 5.5mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 5.6 mm | 0.2205" | 98mm | 63.5mm | Round | 5.6mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 5.7 mm | 0.2244" | 98mm | 63.5mm | Round | 5.7mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 5.8 mm | 0.2283" | 98mm | 63.5mm | Round | 5.8mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 5.9 mm | 0.2323" | 98mm | 63.5mm | Round | 5.9mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 6.0 mm | 0.2362" | 102mm | 66.7mm | Round | 6mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 6.1 mm | 0.2402" | 102mm | 66.7mm | Round | 6.1mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 6.2 mm | 0.2441" | 102mm | 66.7mm | Round | 6.2mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 6.3 mm | 0.248" | 102mm | 66.7mm | Round | 6.3mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 6.4 mm | 0.252" | 105mm | 69.9mm | Round | 6.4mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 6.5 mm | 0.2559" | 105mm | 69.9mm | Round | 6.5mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 6.6 mm | 0.2598" | 105mm | 69.9mm | Round | 6.6mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 6.7 mm | 0.2638" | 105mm | 69.9mm | Round | 6.7mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 6.8 mm | 0.2677" | 105mm | 69.9mm | Round | 6.8mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | 10 | 00000000 | 00000 |
| 6.9 mm | 0.2717" | 105mm | 69.9mm | Round | 6.9mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 7.0 mm | 0.2756" | 105mm | 69.9mm | Round | 7mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 7.1 mm | 0.2795" | 108mm | 71.4mm | Round | 7.1mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 7.2 mm | 0.2835" | 108mm | 71.4mm | Round | 7.2mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 7.3 mm | 0.2874" | 108mm | 71.4mm | Round | 7.3mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 7.4 mm | 0.2913" | 111mm | 73mm | Round | 7.4mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 7.5 mm | 0.2953" | 111mm | 73mm | Round | 7.5mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | 5 | 000000000 | 00000 |
| 7.6 mm | 0.2992" | 111mm | 73mm | Round | 7.6mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 7.7 mm | 0.3032" | 114mm | 79.8mm | Round | 7.7mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 7.8 mm | 0.3071" | 114mm | 79.8mm | Round | 7.8mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 7.9 mm | 0.311" | 114mm | 79.8mm | Round | 7.9mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 8.0 mm | 0.315" | 114mm | 79.8mm | Round | 8mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | 5 | 000000000 | 00000 |
| 8.1 mm | 0.3189" | 117mm | 83.3mm | Round | 8.1mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 8.2 mm | 0.3228" | 117mm | 83.3mm | Round | 8.2mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 8.3 mm | 0.3268" | 117mm | 83.3mm | Round | 8.3mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 8.4 mm | 0.3307" | 121mm | 86.1mm | Round | 8.4mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 8.5 mm | 0.3346" | 121mm | 86.1mm | Round | 8.5mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | 5 | 000000000 | 00000 |
| 8.6 mm | 0.3386" | 121mm | 86.1mm | Round | 8.6mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 8.7 mm | 0.3425" | 121mm | 86.1mm | Round | 8.7mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 8.8 mm | 0.3465" | 124mm | 87.7mm | Round | 8.8mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 8.9 mm | 0.3504" | 124mm | 87.7mm | Round | 8.9mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 9.0 mm | 0.3543" | 124mm | 87.7mm | Round | 9mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | 5 | 000000000 | 00000 |
| 9.1 mm | 0.3583" | 124mm | 87.7mm | Round | 9.1mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 9.2 mm | 0.3622" | 127mm | 88.9mm | Round | 9.2mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 9.3 mm | 0.3661" | 127mm | 88.9mm | Round | 9.3mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 9.4 mm | 0.3701" | 127mm | 88.9mm | Round | 9.4mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 9.5 mm | 0.374" | 127mm | 88.9mm | Round | 9.5mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | 5 | 000000000 | 00000 |
| 9.6 mm | 0.378" | 130mm | 92.1mm | Round | 9.6mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 9.7 mm | 0.3819" | 130mm | 92.1mm | Round | 9.7mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 9.8 mm | 0.3858" | 130mm | 92.1mm | Round | 9.8mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 00000 | __ | 000000 | 00 |
| 9.9 mm | 0.3898" | 130mm | 92.1mm | Round | 9.9mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 00000 | __ | 000000 | 00 |
| 10.0 mm | 0.3937" | 130mm | 92.1mm | Round | 10mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | 5 | 000000000 | 00000 |
| 10.2 mm | 0.4016" | 133mm | 92.1mm | Round | 10.2mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 00000 | 5 | 000000000 | 00000 |
| 10.5 mm | 0.4134" | 133mm | 92.1mm | Round | 10.5mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 00000 | 5 | 000000000 | 00000 |
| 10.8 mm | 0.4252" | 140mm | 99.8mm | Round | 10.8mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 00000 | __ | 000000 | 00 |
| 11.0 mm | 0.4331" | 140mm | 99.8mm | Round | 11mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 00000 | 5 | 00000000 | 00000 |
| 11.2 mm | 0.4409" | 143mm | 106.4mm | Round | 11.2mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 00000 | __ | 000000 | 00 |
| 11.5 mm | 0.4528" | 143mm | 106.4mm | Round | 11.5mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 00000 | __ | 000000 | 00 |
| 11.8 mm | 0.4646" | 146mm | 109.5mm | Round | 11.8mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 00000 | __ | 000000 | 00 |
| 12.0 mm | 0.4724" | 149mm | 110.3mm | Round | 12mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 00000 | 5 | 000000000 | 00000 |
| 12.2 mm | 0.4803" | 149mm | 110.3mm | Round | 12.2mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 00000 | __ | 000000 | 00 |
| 12.5 mm | 0.4921" | 152mm | 113.1mm | Round | 12.5mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 00000 | __ | 000000 | 00 |
| 13.0 mm | 0.5118" | 152mm | 113.1mm | Round | 13mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 00000 | 5 | 000000000 | 00000 |
1/2" Diameter Reduced-Shank Drill Bits
Black and Gold Oxide with Flats on Shank
The shank has a smaller diameter than the tip, allowing you to drill large holes with machines that have small-capacity chucks. Also known as Silver and Deming bits, they have a 1/2” diameter shank.
Drill bits with flats on shank have three flat sides to prevent the bit from slipping in the drill chuck.
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 | Drill Bits with Flats on Shank | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | For Use On | Point Style | Each | |
Metric | |||||||||
Black and Gold Oxide High-Speed Steel | |||||||||
| 13.0 mm | 0.5118" | 152mm | 63.5mm | Reduced Round | 1/2" | Steel, Iron, Stainless Steel | Split | 0000000 | 000000 |
| 13.5 mm | 0.5315" | 152mm | 63.5mm | Reduced Round | 1/2" | Steel, Iron, Stainless Steel | Split | 0000000 | 00000 |
| 14.0 mm | 0.5512" | 152mm | 63.5mm | Reduced Round | 1/2" | Steel, Iron, Stainless Steel | Split | 0000000 | 00000 |
| 14.5 mm | 0.5709" | 152mm | 63.5mm | Reduced Round | 1/2" | Steel, Iron, Stainless Steel | Split | 0000000 | 00000 |
| 15.0 mm | 0.5906" | 152mm | 63.5mm | Reduced Round | 1/2" | Steel, Iron, Stainless Steel | Split | 0000000 | 00000 |
| 15.5 mm | 0.6102" | 152mm | 63.5mm | Reduced Round | 1/2" | Steel, Iron, Stainless Steel | Split | 0000000 | 00000 |
| 16.0 mm | 0.6299" | 152mm | 63.5mm | Reduced Round | 1/2" | Steel, Iron, Stainless Steel | Split | 0000000 | 00000 |
| 16.5 mm | 0.6496" | 152mm | 63.5mm | Reduced Round | 1/2" | Steel, Iron, Stainless Steel | Split | 0000000 | 00000 |
| 17.0 mm | 0.6693" | 152mm | 63.5mm | Reduced Round | 1/2" | Steel, Iron, Stainless Steel | Split | 0000000 | 00000 |
| 17.5 mm | 0.689" | 152mm | 63.5mm | Reduced Round | 1/2" | Steel, Iron, Stainless Steel | Split | 0000000 | 00000 |
| 18.0 mm | 0.7087" | 152mm | 63.5mm | Reduced Round | 1/2" | Steel, Iron, Stainless Steel | Split | 0000000 | 00000 |
| 18.5 mm | 0.7283" | 152mm | 63.5mm | Reduced Round | 1/2" | Steel, Iron, Stainless Steel | Split | 0000000 | 00000 |
| 19.0 mm | 0.748" | 152mm | 63.5mm | Reduced Round | 1/2" | Steel, Iron, Stainless Steel | Split | 0000000 | 00000 |
| 19.5 mm | 0.7677" | 152mm | 63.5mm | Reduced Round | 1/2" | Steel, Iron, Stainless Steel | Split | 0000000 | 00000 |
| 20.0 mm | 0.7874" | 152mm | 63.5mm | Reduced Round | 1/2" | Steel, Iron, Stainless Steel | Split | 0000000 | 00000 |
| 21.0 mm | 0.8268" | 152mm | 63.5mm | Reduced Round | 1/2" | Steel, Iron, Stainless Steel | Split | 0000000 | 00000 |
| 22.0 mm | 0.8661" | 152mm | 63.5mm | Reduced Round | 1/2" | Steel, Iron, Stainless Steel | Split | 0000000 | 00000 |
| 23.0 mm | 0.9055" | 152mm | 63.5mm | Reduced Round | 1/2" | Steel, Iron, Stainless Steel | Split | 0000000 | 00000 |
| 24.0 mm | 0.9449" | 152mm | 63.5mm | Reduced Round | 1/2" | Steel, Iron, Stainless Steel | Split | 0000000 | 00000 |
| 25.0 mm | 0.9842" | 152mm | 63.5mm | Reduced Round | 1/2" | Steel, Iron, Stainless Steel | Split | 0000000 | 00000 |
Maintenance-Length Drill Bit Sets
Also known as mechanics’ bits, these are shorter and more rigid than jobbers' bits but longer than short-length bits. A split point keeps the bit centered without a pilot hole. Their shanks have three flat sides to prevent the bit from slipping in the drill chuck.
For technical drawings and 3-D models, click on a part number.
| Number of Pieces | Drill Bit Sizes Included | Point Style | For Use On | Each | |
Inch | |||||
|---|---|---|---|---|---|
Black-and-Gold-Oxide High-Speed Steel | |||||
| 29 | 1/16"-1/2" (increments of 1/64") | Split | Steel, Iron, Stainless Steel | 00000000 | 0000000 |
Drill Bit Sets
These jobbers'-length bits have the rigidity and length required for most applications.
Black-oxide and black-and-gold-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.
| No. of Pieces | Drill Bit Sizes Included | Point Style | Specifications Met | For Use On | Each | |
Metric | ||||||
|---|---|---|---|---|---|---|
Black-and-Gold-Oxide High-Speed Steel | ||||||
| 13 | 1.0 mm and 1.5 mm 2.0-7.0 mm (increments of 0.5 mm) | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 00000000 | 000000 |
| 19 | 1.0 mm and 1.5 mm 2.0-10.0 mm (increments of 0.5 mm) | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 00000000 | 00000 |
| 25 | 1.0 mm and 1.5 mm 2.0-13.0 mm (increments of 0.5 mm) | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 00000000 | 000000 |
| 41 | 6.0-10.0 mm (increments of 0.1 mm) | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 00000000 | 000000 |
Hole-Enlarging Drill-Bit Sets
Enlarge existing holes without changing the depth. These bits have flutes with a right-hand spiral and a right-hand cut. The flutes pull chips upward as they cut for use in blind holes.
For technical drawings and 3-D models, click on a part number.
Direction | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Drill Bit Size | Sizes Included | Number of Pieces | Flute Style | Spiral | Cut | Container Type | For Use On | System of Measurement | Each | |
Black and Gold Oxide Tool Steel | ||||||||||
| 1/4", 5/16", 3/8", 25/64", 15/32", 1/2", 5/8", 3/4" | 1/4", 5/16", 25/64", and 15/32" Hole-Starting Bits; 3/8", 1/2", 5/8", and 3/4" Hole-Enlarging Bits | 8 | Spiral | Right Hand | Right Hand | Metal Case | Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel | Inch | 00000000 | 0000000 |
Hole-Enlarging Drill Bits
Enlarge existing holes without changing their depth. These bits have flutes with a right-hand spiral and a right-hand cut. The flutes pull chips upward as they cut for use in blind holes.
For technical drawings and 3-D models, click on a part number.
Lg. | Direction | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Reamer Size | Drill Bit Size | For Min. Hole Dia. | Shank Dia. | Max. Drilling Dp. | Flute | Overall | Number of Flutes | Flute Style | Spiral | Cut | Cutting Dia. Tolerance | For Use On | Each | |
Black and Gold Oxide Tool Steel | ||||||||||||||
| 3/8" | 3/8" | 1/4" | 3/8" | 1 3/4" | 1 7/8" | 4 5/16" | 4 | Spiral | Right Hand | Right Hand | -0.001" to 0" | Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel | 00000000 | 000000 |
| 1/2" | 1/2" | 5/16" | 1/2" | 1 3/4" | 1 7/8" | 4 5/16" | 4 | Spiral | Right Hand | Right Hand | -0.001" to 0" | Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel | 00000000 | 00000 |
| 9/16" | 9/16" | 3/8" | 1/2" | 1 3/4" | 1 7/8" | 4 5/16" | 4 | Spiral | Right Hand | Right Hand | -0.001" to 0" | Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel | 00000000 | 00000 |
| 5/8" | 5/8" | 25/64" | 1/2" | 1 3/4" | 1 7/8" | 4 5/16" | 4 | Spiral | Right Hand | Right Hand | -0.001" to 0" | Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel | 00000000 | 00000 |
| 11/16" | 11/16" | 7/16" | 1/2" | 1 3/4" | 1 7/8" | 4 5/16" | 4 | Spiral | Right Hand | Right Hand | -0.001" to 0" | Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel | 00000000 | 00000 |
| 3/4" | 3/4" | 15/32" | 1/2" | 1 3/4" | 1 7/8" | 4 5/16" | 4 | Spiral | Right Hand | Right Hand | -0.001" to 0" | Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel | 00000000 | 00000 |