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C drill bit size
C drill = .2420 in = 6.15 mm. Closest metric drill: 6.1 mm.
Nearby drill sizes
| Drill | Type | Inch | mm | Difference |
|---|---|---|---|---|
| #1 | number | .2280 in | 5.791 | -14.0 thou |
| A | letter | .2340 in | 5.944 | -8.0 thou |
| 15/64 | fraction | .2344 in | 5.953 | -7.6 thou |
| B | letter | .2380 in | 6.045 | -4.0 thou |
| C | letter | .2420 in | 6.147 | 0.0 thou |
| D | letter | .2460 in | 6.248 | 4.0 thou |
| E | letter | .2500 in | 6.350 | 8.0 thou |
| 1/4 | fraction | .2500 in | 6.350 | 8.0 thou |
| F | letter | .2570 in | 6.528 | 15.0 thou |
1 thou = 0.001 in = 0.0254 mm. Drills a few thou apart are usually interchangeable for clearance holes, but not for tap drills or reamer pilots.