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#2 drill bit size
#2 drill = .2210 in = 5.61 mm. Closest metric drill: 5.6 mm.
Nearby drill sizes
| Drill | Type | Inch | mm | Difference |
|---|---|---|---|---|
| #5 | number | .2055 in | 5.220 | -15.5 thou |
| #4 | number | .2090 in | 5.309 | -12.0 thou |
| #3 | number | .2130 in | 5.410 | -8.0 thou |
| 7/32 | fraction | .2188 in | 5.556 | -2.3 thou |
| #2 | number | .2210 in | 5.613 | 0.0 thou |
| #1 | number | .2280 in | 5.791 | 7.0 thou |
| A | letter | .2340 in | 5.944 | 13.0 thou |
| 15/64 | fraction | .2344 in | 5.953 | 13.4 thou |
| B | letter | .2380 in | 6.045 | 17.0 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.