#36 drill size
A #36 drill is 0.1065 in (2.71 mm). It is the standard tap drill for #6-32 UNC; the nearest metric drill is 2.7 mm.
#36 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 |
|---|---|---|---|---|
| 2.7 mm | 0.1063" | −0.005 mm | −0.0002" | Smaller |
| 2.75 mm | 0.1083" | +0.045 mm | +0.0018" | 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 #36 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 #36 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" | 0.0335" | 0.0168" | – |
| #2 screw | 0.0860" | 0.0205" | 0.0103" | – |
| M2.5 bolt | 2.5 mm | 0.21 mm | 0.10 mm | Close fit (close 2.7, normal 2.9 mm) |
| #3 screw | 0.0990" | 0.0075" | 0.0037" | – |
Inch clearance is the drill size minus the basic major diameter. A drilled hole usually cuts slightly oversize.
Number drill index
Every size in the series, holes drawn to scale.
Common questions
What size is a #36 drill?
A #36 drill is 0.1065 in, which is 2.71 mm (2.7051 mm exactly).
What is the metric equivalent of a #36 drill?
The nearest metric drill is 2.7 mm, 0.005 mm smaller. The other close size is 2.75 mm.
What tap uses a #36 drill?
A #36 drill is the standard tap drill for #6-32 UNC (about 78 % thread).
Which fractional drill is closest to #36?
7/64 in (0.1094 in) is the closest, 0.0029 in larger.
What does a #36 drill clear?
It clears a #3 screw with 0.0075" total clearance (0.0037" per side).