About Drill Bits
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Drill Bit Decimal Size Equivalents
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Carbide Drill Bits
These jobbers'-length bits have the rigidity and length required for most applications. Made of solid carbide for the highest accuracy and longest tool life, they are harder, stronger, and more wear resistant than high-speed steel, cobalt steel, and carbide-tipped bits. They retain a sharp, hard edge at high temperatures for the best performance on hard and abrasive material. The four-facet point keeps the bit centered without a pilot hole. These bits require rigid toolholding to prevent breakage and should not be used in hand-held drilling applications.
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 | For Use On | Each | |
Metric | |||||||||
Uncoated Carbide | |||||||||
| 11.5 mm | 0.4528" | 120mm | 76mm | Round | 11.5mm | Four Facet | Steel, Iron, Stainless Steel, Aluminum, Brass, Bronze, Plastic | 0000000 | 0000000 |
| 12.0 mm | 0.4724" | 120mm | 76mm | Round | 12mm | Four Facet | Steel, Iron, Stainless Steel, Aluminum, Brass, Bronze, Plastic | 0000000 | 000000 |
| 12.5 mm | 0.4921" | 120mm | 76mm | Round | 12.5mm | Four Facet | Steel, Iron, Stainless Steel, Aluminum, Brass, Bronze, Plastic | 0000000 | 000000 |
Drill Bits for Carbon Fiber, Fiberglass, and Graphite
These jobbers'-length bits have the rigidity and length required for most applications. They are designed to make clean holes in abrasive material. Their point keeps the bit centered without a pilot hole.
Diamond-coated drill bits are highly wear resistant for drilling in abrasive material. They last longer than uncoated bits.