Letter drill to decimal inches
Type a value in letter drill to get it in in instantly.
0.261in
That's 1.02× as wide as the tap drill for 5/16-18 (F), while the tap drill for 3/8-16 (5/16") is 1.2× wider.
Convert the other way: in to letter drill
What it means
How wide is that hole?
Sizes from ASME B94.11M. Between two listed drills the label shows the nearest one; the millimeters are exact.
The math
How to convert letter drill to in
Number and letter drills are a table: #29 = 0.1360 in = 3.454 mm, #7 = 0.2010 in, F = 0.2570 in. Millimeters = inches × 25.4.
Example: G letter drill = 0.261 in.
Every unit
That drill in every system
Tables
letter drill to in conversion table
| letter drill | in |
|---|---|
| A letter drill | 0.234 in |
| C letter drill | 0.242 in |
| E letter drill | 0.25 in |
| G letter drill | 0.261 in |
| J letter drill | 0.277 in |
| O letter drill | 0.316 in |
| T letter drill | 0.358 in |
| U letter drill | 0.368 in |
| Y letter drill | 0.404 in |
in to letter drill conversion table
| in | letter drill |
|---|---|
| 0.234 in | A letter drill |
| 0.242 in | C letter drill |
| 0.25 in | E letter drill |
| 0.261 in | G letter drill |
| 0.277 in | J letter drill |
| 0.316 in | O letter drill |
| 0.358 in | T letter drill |
| 0.368 in | U letter drill |
| 0.404 in | Y letter drill |
Quick answers
Quick answers
- How many in is A letter drill?
- A letter drill is 0.234 in.
- How many in is J letter drill?
- J letter drill is 0.277 in.
- How many in is G letter drill?
- G letter drill is 0.261 in.
The units
About these units
Letter drill (letter drill)
Letter drills A to Z.
Decimal inches (in)
The diameter in inches, as charts list it.
Keep going