# #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 drill data

- Series: Number drill
- Decimal: 0.0960 in
- Metric: 2.44 mm (2.4384 mm exact)
- Nearest metric drill: 2.45 mm (+0.012 mm)
- Nearest fractional: 3/32" (0.0938 in)

## Nearest metric drills

| Metric drill | Inch | Difference |
|---|---|---|
| 2.4 mm | 0.0945 | −0.038 mm |
| 2.45 mm | 0.0965 | +0.012 mm |

## Nearby inch drills

| Drill | Series | Inch | mm |
|---|---|---|---|
| #42 | Number | 0.0935 | 2.37 |
| 3/32" | Fractional | 0.0938 | 2.38 |
| #41 | Number | 0.0960 | 2.44 |
| #40 | Number | 0.0980 | 2.49 |
| 7/64" | Fractional | 0.1094 | 2.78 |
| Letter A | Letter | 0.2340 | 5.94 |

## Threads this drill can tap

| Thread | Standard drill | Thread % with this drill |
|---|---|---|
| #4-48 UNF | #42 | 59 |

## Clearance

| Fastener | Diameter | Clearance | Per side | ISO 273 |
|---|---|---|---|---|
| #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" | – |


## FAQ

**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).

Source page: https://machinistcharts.com/drill-size/number-41/
Updated: 2026-10-06
Publisher: MachinistCharts (https://machinistcharts.com)