Home › Drill size chart › #45 drill
#45 drill bit size
#45 drill = .0820 in = 2.08 mm. Closest metric drill: 2.1 mm.
Taps that use a #45 drill
- #3-56 UNF: about 73% thread
Nearby drill sizes
| Drill | Type | Inch | mm | Difference |
|---|---|---|---|---|
| #48 | number | .0760 in | 1.930 | -6.0 thou |
| 5/64 | fraction | .0781 in | 1.984 | -3.9 thou |
| #47 | number | .0785 in | 1.994 | -3.5 thou |
| #46 | number | .0810 in | 2.057 | -1.0 thou |
| #45 | number | .0820 in | 2.083 | 0.0 thou |
| #44 | number | .0860 in | 2.184 | 4.0 thou |
| #43 | number | .0890 in | 2.261 | 7.0 thou |
| #42 | number | .0935 in | 2.375 | 11.5 thou |
| 3/32 | fraction | .0938 in | 2.381 | 11.7 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.