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W drill bit size
W drill = .3860 in = 9.80 mm. Closest metric drill: 9.8 mm.
Nearby drill sizes
| Drill | Type | Inch | mm | Difference |
|---|---|---|---|---|
| 23/64 | fraction | .3594 in | 9.128 | -26.6 thou |
| U | letter | .3680 in | 9.347 | -18.0 thou |
| 3/8 | fraction | .3750 in | 9.525 | -11.0 thou |
| V | letter | .3770 in | 9.576 | -9.0 thou |
| W | letter | .3860 in | 9.804 | 0.0 thou |
| 25/64 | fraction | .3906 in | 9.922 | 4.6 thou |
| X | letter | .3970 in | 10.084 | 11.0 thou |
| Y | letter | .4040 in | 10.262 | 18.0 thou |
| 13/32 | fraction | .4063 in | 10.319 | 20.2 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.