Drill Bit Decimal Size Equivalents
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About Drill Bits
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Extended-Length Carbide-Tipped Drill Bits with Coolant Holes
Also known as gun drills, use these bits to drill long, straight holes. A hole in the bit allows coolant to be channeled through the tool for more efficient chip evacuation. 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.
For technical drawings and 3-D models, click on a part number.
Shank | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | No. of Coolant Holes | For Use On | Each | |
Inch | ||||||||||
Uncoated Carbide-Tipped Steel | ||||||||||
| 1/8" | 0.125" | 10" | 7" | Round | 0.7498" | Standard | 1 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000000 |
| 1/8" | 0.125" | 12" | 8.5" | Round | 0.7498" | Standard | 1 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 1/8" | 0.125" | 16" | 12.5" | Round | 0.7498" | Standard | 1 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 5/32" | 0.1563" | 10" | 7" | Round | 0.7498" | Standard | 1 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 5/32" | 0.1563" | 12" | 8.5" | Round | 0.7498" | Standard | 1 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 0000000 | 000000 |
| 5/32" | 0.1563" | 16" | 12.5" | Round | 0.7498" | Standard | 1 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 3/16" | 0.1875" | 10" | 7" | Round | 0.7498" | Standard | 1 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 3/16" | 0.1875" | 12" | 8.5" | Round | 0.7498" | Standard | 1 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 3/16" | 0.1875" | 16" | 12.5" | Round | 0.7498" | Standard | 1 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 7/32" | 0.2188" | 10" | 7" | Round | 0.7498" | Standard | 1 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 7/32" | 0.2188" | 12" | 8.5" | Round | 0.7498" | Standard | 1 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 7/32" | 0.2188" | 16" | 12.5" | Round | 0.7498" | Standard | 1 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 7/32" | 0.2188" | 22" | 18" | Round | 0.7498" | Standard | 1 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 0000000 | 000000 |
| 1/4" | 0.25" | 10" | 7" | Round | 0.7498" | Standard | 1 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 1/4" | 0.25" | 12" | 8.5" | Round | 0.7498" | Standard | 1 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 1/4" | 0.25" | 16" | 12.5" | Round | 0.7498" | Standard | 1 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 1/4" | 0.25" | 22" | 18" | Round | 0.7498" | Standard | 1 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 1/4" | 0.25" | 28" | 24" | Round | 0.7498" | Standard | 1 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 17/64" | 0.2656" | 10" | 7" | Round | 0.7498" | Standard | 1 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 0000000 | 000000 |
| 17/64" | 0.2656" | 12" | 8.5" | Round | 0.7498" | Standard | 1 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 17/64" | 0.2656" | 16" | 12.5" | Round | 0.7498" | Standard | 1 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 17/64" | 0.2656" | 22" | 18" | Round | 0.7498" | Standard | 1 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 17/64" | 0.2656" | 28" | 24" | Round | 0.7498" | Standard | 1 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 9/32" | 0.2813" | 10" | 7" | Round | 0.7498" | Standard | 1 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 9/32" | 0.2813" | 12" | 8.5" | Round | 0.7498" | Standard | 1 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 9/32" | 0.2813" | 16" | 12.5" | Round | 0.7498" | Standard | 1 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 9/32" | 0.2813" | 22" | 18" | Round | 0.7498" | Standard | 1 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 9/32" | 0.2813" | 28" | 24" | Round | 0.7498" | Standard | 1 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 5/16" | 0.3125" | 10" | 7" | Round | 0.7498" | Standard | 1 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 5/16" | 0.3125" | 12" | 8.5" | Round | 0.7498" | Standard | 1 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 5/16" | 0.3125" | 16" | 12.5" | Round | 0.7498" | Standard | 1 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 5/16" | 0.3125" | 22" | 18" | Round | 0.7498" | Standard | 1 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 5/16" | 0.3125" | 28" | 24" | Round | 0.7498" | Standard | 1 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 3/8" | 0.375" | 10" | 7" | Round | 0.7498" | Standard | 2 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 3/8" | 0.375" | 12" | 8.5" | Round | 0.7498" | Standard | 2 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 3/8" | 0.375" | 16" | 12.5" | Round | 0.7498" | Standard | 2 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 3/8" | 0.375" | 22" | 18" | Round | 0.7498" | Standard | 2 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 0000000 | 000000 |
| 3/8" | 0.375" | 28" | 24" | Round | 0.7498" | Standard | 2 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 13/32" | 0.4063" | 10" | 7" | Round | 0.7498" | Standard | 2 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 13/32" | 0.4063" | 12" | 8.5" | Round | 0.7498" | Standard | 2 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 13/32" | 0.4063" | 16" | 12.5" | Round | 0.7498" | Standard | 2 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 13/32" | 0.4063" | 22" | 18" | Round | 0.7498" | Standard | 2 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 0000000 | 000000 |
| 13/32" | 0.4063" | 28" | 24" | Round | 0.7498" | Standard | 2 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 13/32" | 0.4063" | 36" | 32" | Round | 0.7498" | Standard | 2 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 1/2" | 0.5" | 10" | 7" | Round | 0.7498" | Standard | 2 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 1/2" | 0.5" | 12" | 8.5" | Round | 0.7498" | Standard | 2 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 1/2" | 0.5" | 16" | 12.5" | Round | 0.7498" | Standard | 2 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 0000000 | 000000 |
| 1/2" | 0.5" | 22" | 18" | Round | 0.7498" | Standard | 2 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 1/2" | 0.5" | 28" | 24" | Round | 0.7498" | Standard | 2 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
| 1/2" | 0.5" | 36" | 32" | Round | 0.7498" | Standard | 2 | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |