U Drill Size
A U letter drill is 0.3680" (9.347 mm).
Closest fraction: 3/8 (0.3750", over by 0.0070").
Tap drill for
Next size down / up
| Drill | Inch | mm |
|---|---|---|
| 23/64 | 0.3594 | 9.128 |
| 9.5 mm | 0.3740 | 9.500 |
Printable PDF version - Drill Size Chart
Clean letter-size sheet for the toolbox or shop wall. Instant download, $3.49.
Clean letter-size sheet for the toolbox or shop wall. Instant download, $3.49.