# #48 drill size

A #48 drill is 0.0760 in (1.93 mm). It sits between #49 and #47 in the number series; the nearest metric drill is 1.95 mm.

## #48 drill data

- Series: Number drill
- Decimal: 0.0760 in
- Metric: 1.93 mm (1.9304 mm exact)
- Nearest metric drill: 1.95 mm (+0.020 mm)
- Nearest fractional: 5/64" (0.0781 in)

## Nearest metric drills

| Metric drill | Inch | Difference |
|---|---|---|
| 1.9 mm | 0.0748 | −0.030 mm |
| 1.95 mm | 0.0768 | +0.020 mm |

## Nearby inch drills

| Drill | Series | Inch | mm |
|---|---|---|---|
| 1/16" | Fractional | 0.0625 | 1.59 |
| #49 | Number | 0.0730 | 1.85 |
| #48 | Number | 0.0760 | 1.93 |
| 5/64" | Fractional | 0.0781 | 1.98 |
| #47 | Number | 0.0785 | 1.99 |
| Letter A | Letter | 0.2340 | 5.94 |

## Threads this drill can tap

| Thread | Standard drill | Thread % with this drill |
|---|---|---|
| #3-48 UNC | #47 | 85 |

## Clearance

| Fastener | Diameter | Clearance | Per side | ISO 273 |
|---|---|---|---|---|
| M1.6 bolt | 1.6 mm | 0.33 mm | 0.17 mm | Normal fit (normal 1.8, loose 2 mm) |
| #1 screw | 0.0730" | 0.0030" | 0.0015" | – |


## FAQ

**What size is a #48 drill?**
A #48 drill is 0.0760 in, which is 1.93 mm (1.9304 mm exactly).

**What is the metric equivalent of a #48 drill?**
The nearest metric drill is 1.95 mm, 0.020 mm larger. The other close size is 1.9 mm.

**What thread can I tap with a #48 drill?**
It leaves about 85 % thread in #3-48 UNC.

**Which fractional drill is closest to #48?**
5/64 in (0.0781 in) is the closest, 0.0021 in larger.

**What does a #48 drill clear?**
It clears a #1 screw with 0.0030" total clearance (0.0015" per side).

Source page: https://machinistcharts.com/drill-size/number-48/
Updated: 2026-10-06
Publisher: MachinistCharts (https://machinistcharts.com)