Drill Bit Decimal Size Equivalents
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Cobalt Steel Drill Bits for Stainless Steel and Nickel
Cobalt steel and a titanium aluminum nitride (TiAlN) coating provide the heat and wear resistance necessary for drilling in stainless steel and nickel alloys. These bits have parabolic spiral flutes, which lift chips out of the hole to reduce clogging and improve coolant flow. They are jobbers' length and have the rigidity and length required for most hand-held drilling and machine tool 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 | Specifications Met | Each | |
Inch—Parabolic Spiral Flute | |||||||||
Titanium-Aluminum-Nitride (TiAlN) Coated Cobalt Steel | |||||||||
| 3/32" | 0.0938" | 2 1/4" | 1.18" | Round | 3/32" | Split | DIN 338 | 0000000 | 000000 |
| 7/64" | 0.1094" | 2 3/8" | 1.3" | Round | 7/64" | Split | DIN 338 | 0000000 | 00000 |
| 1/8" | 0.125" | 2 5/8" | 1.42" | Round | 1/8" | Split | DIN 338 | 0000000 | 00000 |
| 9/64" | 0.1406" | 2 3/4" | 1.53" | Round | 9/64" | Split | DIN 338 | 0000000 | 00000 |
| 5/32" | 0.1563" | 3" | 1.69" | Round | 5/32" | Split | DIN 338 | 0000000 | 00000 |
| 11/64" | 0.1719" | 3 1/8" | 1.85" | Round | 11/64" | Split | DIN 338 | 0000000 | 00000 |
| 3/16" | 0.1875" | 3 3/8" | 2.05" | Round | 3/16" | Split | DIN 338 | 0000000 | 00000 |
| 13/64" | 0.2031" | 3 3/8" | 2.05" | Round | 13/64" | Split | DIN 338 | 0000000 | 00000 |
| 7/32" | 0.2188" | 3 5/8" | 2.24" | Round | 7/32" | Split | DIN 338 | 0000000 | 00000 |
| 15/64" | 0.2344" | 3 5/8" | 2.24" | Round | 15/64" | Split | DIN 338 | 0000000 | 00000 |
| 1/4" | 0.25" | 4" | 2.48" | Round | 1/4" | Split | DIN 338 | 0000000 | 00000 |
| 9/32" | 0.2813" | 4 1/4" | 2.72" | Round | 9/32" | Split | DIN 338 | 0000000 | 00000 |
| 5/16" | 0.3125" | 4 5/8" | 2.95" | Round | 5/16" | Split | DIN 338 | 0000000 | 00000 |
| 11/32" | 0.3438" | 5" | 3.18" | Round | 11/32" | Split | DIN 338 | 0000000 | 00000 |
| 7/16" | 0.4375" | 5 5/8" | 3.7" | Round | 7/16" | Split | DIN 338 | 0000000 | 00000 |
Metric—Parabolic Spiral Flute | |||||||||
Titanium-Aluminum-Nitride (TiAlN) Coated Cobalt Steel | |||||||||
| 1.0 mm | 0.0394" | 34mm | 10.5mm | Round | 1mm | Split | DIN 338 | 0000000 | 00000 |
| 1.5 mm | 0.0591" | 40mm | 18mm | Round | 1.5mm | Split | DIN 338 | 0000000 | 00000 |
| 2.0 mm | 0.0787" | 49mm | 24mm | Round | 2mm | Split | DIN 338 | 0000000 | 00000 |
| 2.5 mm | 0.0984" | 57mm | 30mm | Round | 2.5mm | Split | DIN 338 | 0000000 | 00000 |
| 3.0 mm | 0.1181" | 61mm | 33mm | Round | 3mm | Split | DIN 338 | 0000000 | 00000 |
| 3.3 mm | 0.13" | 65mm | 36mm | Round | 3.3mm | Split | DIN 338 | 0000000 | 00000 |
| 3.4 mm | 0.1339" | 70mm | 39mm | Round | 3.4mm | Split | DIN 338 | 0000000 | 00000 |
| 3.5 mm | 0.1378" | 70mm | 39mm | Round | 3.5mm | Split | DIN 338 | 0000000 | 00000 |
| 4.0 mm | 0.1575" | 75mm | 43mm | Round | 4mm | Split | DIN 338 | 0000000 | 00000 |
| 4.2 mm | 0.1654" | 75mm | 43mm | Round | 4.2mm | Split | DIN 338 | 0000000 | 00000 |
| 5.0 mm | 0.1968" | 86mm | 52mm | Round | 5mm | Split | DIN 338 | 0000000 | 00000 |
| 6.0 mm | 0.2362" | 93mm | 57mm | Round | 6mm | Split | DIN 338 | 0000000 | 00000 |
| 6.7 mm | 0.2638" | 101mm | 63mm | Round | 6.7mm | Split | DIN 338 | 0000000 | 00000 |
| 7.0 mm | 0.2756" | 109mm | 69mm | Round | 7mm | Split | DIN 338 | 0000000 | 00000 |