3/32" drill size
A 3/32 in drill is 0.0938 in (2.38 mm). It sits between 5/64 in and 7/64 in in the fractional series; the nearest metric drill is 2.4 mm.
3/32" 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 |
|---|---|---|---|---|
| 2.35 mm | 0.0925" | −0.031 mm | −0.0012" | Smaller |
| 2.4 mm | 0.0945" | +0.019 mm | +0.0007" | 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 3/32" 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).
Clearance for screws and bolts
Bolts and screws a 3/32" hole clears, with the diametral clearance and the gap each side. Metric sizes are compared with ISO 273.
| Fastener | Diameter | Clearance | Per side | ISO 273, metric only |
|---|---|---|---|---|
| #1 screw | 0.0730" | 0.0208" | 0.0104" | – |
| M2 bolt | 2 mm | 0.38 mm | 0.19 mm | Close fit (close 2.2, normal 2.4 mm) |
| #2 screw | 0.0860" | 0.0078" | 0.0039" | – |
Inch clearance is the drill size minus the basic major diameter. A drilled hole usually cuts slightly oversize.
Fractional drill index
Every size in the series, holes drawn to scale.
Common questions
What size is a 3/32 in drill?
A 3/32 in drill is 0.0938 in, which is 2.38 mm (2.3812 mm exactly).
What is the metric equivalent of a 3/32 in drill?
The nearest metric drill is 2.4 mm, 0.019 mm larger. The other close size is 2.35 mm.
What thread can I tap with a 3/32 in drill?
It leaves about 67 % thread in #4-48 UNF and 56 % in #4-40 UNC.
Which number or letter drill is closest to 3/32 in?
#42 (0.0935 in) is the closest, 0.0003 in smaller.
What does a 3/32 in drill clear?
It clears a #2 screw with 0.0078" total clearance (0.0039" per side).