1/16" drill size
A 1/16 in drill is 0.0625 in (1.59 mm). It sits between 3/64 in and 5/64 in in the fractional series; the nearest metric drill is 1.6 mm.
1/16" at a glance
Decimal, metric and the nearest sizes in the other series.
Nearest metric drills
Metric drills step by 0.05 mm below 3 mm and by 0.1 mm from 3 mm. Difference is metric minus inch size.
| Metric drill | Inch | Difference | In inches | Hole |
|---|---|---|---|---|
| 1.55 mm | 0.0610" | −0.037 mm | −0.0015" | Smaller |
| 1.6 mm | 0.0630" | +0.013 mm | +0.0005" | Larger |
Nearby inch drills
The next size down and up in each inch series, so you can pick a substitute from the drawer.
Threads a 1/16" drill can tap
Threads from the tap tables on this site that this drill can tap, with the thread percentage it leaves (55–85 % shown).
Fractional drill index
Every size in the series, holes drawn to scale.
Common questions
What size is a 1/16 in drill?
A 1/16 in drill is 0.0625 in, which is 1.59 mm (1.5875 mm exactly).
What is the metric equivalent of a 1/16 in drill?
The nearest metric drill is 1.6 mm, 0.013 mm larger. The other close size is 1.55 mm.
What thread can I tap with a 1/16 in drill?
It leaves about 79 % thread in M2 × 0.4 and 58 % in #1-72 UNF.
Which number or letter drill is closest to 1/16 in?
#52 (0.0635 in) is the closest, 0.0010 in larger.