Drill Bit Decimal Size Equivalents
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About Drill Bits
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Short-Length Drill Bits for Carbon
Fiber, Fiberglass, and Graphite
Also known as screw-machine and stub-length bits, these provide maximum rigidity for drilling straighter holes than jobbers’-length drill bits. A diamond coating gives them the sharpness and wear resistance for drilling clean holes in abrasive material. The split point keeps the bit centered without a pilot hole.
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 | Each | |
Inch | ||||||||
Diamond-Coated Carbide | ||||||||
1/8" | 0.125" | 2" | 0.5" | Round | 1/8" | Split | 0000000 | 000000 |
9/64" | 0.1406" | 2" | 0.5" | Round | 9/64" | Split | 0000000 | 00000 |
11/64" | 0.1719" | 2 1/2" | 0.6" | Round | 11/64" | Split | 0000000 | 00000 |
3/16" | 0.1875" | 2 1/2" | 0.6" | Round | 3/16" | Split | 0000000 | 00000 |
7/32" | 0.2188" | 2 1/2" | 0.8" | Round | 7/32" | Split | 0000000 | 00000 |
1/4" | 0.25" | 2 1/2" | 0.8" | Round | 1/4" | Split | 0000000 | 00000 |
5/16" | 0.3125" | 2 3/4" | 1" | Round | 5/16" | Split | 0000000 | 00000 |
3/8" | 0.375" | 3" | 1" | Round | 3/8" | Split | 0000000 | 000000 |
1/2" | 0.5" | 3" | 1" | Round | 1/2" | Split | 0000000 | 000000 |