#41 drill size
A #41 drill is 0.0960 in (2.44 mm). It sits between #42 and #40 in the number series; the nearest metric drill is 2.45 mm.
#41 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 |
|---|---|---|---|---|
| 2.4 mm | 0.0945" | −0.038 mm | −0.0015" | Smaller |
| 2.45 mm | 0.0965" | +0.012 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 #41 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 #41 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" | 0.0230" | 0.0115" | – |
| M2 bolt | 2 mm | 0.44 mm | 0.22 mm | Normal fit (normal 2.4, loose 2.6 mm) |
| #2 screw | 0.0860" | 0.0100" | 0.0050" | – |
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 #41 drill?
A #41 drill is 0.0960 in, which is 2.44 mm (2.4384 mm exactly).
What is the metric equivalent of a #41 drill?
The nearest metric drill is 2.45 mm, 0.012 mm larger. The other close size is 2.4 mm.
What thread can I tap with a #41 drill?
It leaves about 59 % thread in #4-48 UNF.
Which fractional drill is closest to #41?
3/32 in (0.0938 in) is the closest, 0.0023 in smaller.
What does a #41 drill clear?
It clears a #2 screw with 0.0100" total clearance (0.0050" per side).