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A drill bit size
A drill = .2340 in = 5.94 mm. Closest metric drill: 5.9 mm.
Nearby drill sizes
| Drill | Type | Inch | mm | Difference |
|---|---|---|---|---|
| #3 | number | .2130 in | 5.410 | -21.0 thou |
| 7/32 | fraction | .2188 in | 5.556 | -15.3 thou |
| #2 | number | .2210 in | 5.613 | -13.0 thou |
| #1 | number | .2280 in | 5.791 | -6.0 thou |
| A | letter | .2340 in | 5.944 | 0.0 thou |
| 15/64 | fraction | .2344 in | 5.953 | 0.4 thou |
| B | letter | .2380 in | 6.045 | 4.0 thou |
| C | letter | .2420 in | 6.147 | 8.0 thou |
| D | letter | .2460 in | 6.248 | 12.0 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.