Letter drill to fractional inches
Type a value in letter drill to get it in in (fraction) instantly.
≈17/64in (fraction)
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.
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 (fraction)
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 = ≈17/64 in (fraction).
Every unit
That drill in every system
Tables
letter drill to in (fraction) conversion table
| letter drill | in (fraction) |
|---|---|
| A letter drill | ≈15/64 in (fraction) |
| C letter drill | ≈15/64 in (fraction) |
| E letter drill | 1/4 in (fraction) |
| G letter drill | ≈17/64 in (fraction) |
| J letter drill | ≈9/32 in (fraction) |
| O letter drill | ≈5/16 in (fraction) |
| T letter drill | ≈23/64 in (fraction) |
| U letter drill | ≈3/8 in (fraction) |
| Y letter drill | ≈13/32 in (fraction) |
in (fraction) to letter drill conversion table
| in (fraction) | letter drill |
|---|---|
| 15/64 in (fraction) | A letter drill |
| 1/4 in (fraction) | E letter drill |
| 17/64 in (fraction) | H letter drill |
| 9/32 in (fraction) | K letter drill |
| 5/16 in (fraction) | O letter drill |
| 23/64 in (fraction) | T letter drill |
| 3/8 in (fraction) | V letter drill |
| 13/32 in (fraction) | Y letter drill |
Quick answers
Quick answers
- How many in (fraction) is A letter drill?
- A letter drill is ≈15/64 in (fraction).
- How many in (fraction) is J letter drill?
- J letter drill is ≈9/32 in (fraction).
- How many in (fraction) is G letter drill?
- G letter drill is ≈17/64 in (fraction).
The units
About these units
Letter drill (letter drill)
Letter drills A to Z.
Fractional inches (in (fraction))
The nearest 64th of an inch; ≈ marks a size that falls between marks.
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