# 29/32" drill size

A 29/32 in drill is 0.9062 in (23.02 mm). It sits between 57/64 in and 59/64 in in the fractional series; the nearest metric drill is 23.0 mm.

## 29/32" drill data

- Series: Fractional drill
- Decimal: 0.9062 in
- Metric: 23.02 mm (23.0187 mm exact)
- Nearest metric drill: 23.0 mm (−0.019 mm)

## Nearest metric drills

| Metric drill | Inch | Difference |
|---|---|---|
| 23.0 mm | 0.9055 | −0.019 mm |
| 23.1 mm | 0.9094 | +0.081 mm |

## Nearby inch drills

| Drill | Series | Inch | mm |
|---|---|---|---|
| #1 | Number | 0.2280 | 5.79 |
| Letter Z | Letter | 0.4130 | 10.49 |
| 57/64" | Fractional | 0.8906 | 22.62 |
| 29/32" | Fractional | 0.9062 | 23.02 |
| 59/64" | Fractional | 0.9219 | 23.42 |

## Threads this drill can tap

| Thread | Standard drill | Thread % with this drill |
|---|---|---|
| 1-8 UNC | 7/8 | 58 |

## Clearance

| Fastener | Diameter | Clearance | Per side | ISO 273 |
|---|---|---|---|---|
| M20 bolt | 20 mm | 3.02 mm | 1.51 mm | Normal fit (normal 22, loose 24 mm) |
| M22 bolt | 22 mm | 1.02 mm | 0.51 mm | Close fit (close 23, normal 24 mm) |
| 7/8" bolt | 0.8750" | 0.0312" | 0.0156" | – |


## FAQ

**What size is a 29/32 in drill?**
A 29/32 in drill is 0.9062 in, which is 23.02 mm (23.0187 mm exactly).

**What is the metric equivalent of a 29/32 in drill?**
The nearest metric drill is 23.0 mm, 0.019 mm smaller. The other close size is 23.1 mm.

**What thread can I tap with a 29/32 in drill?**
It leaves about 58 % thread in 1-8 UNC.

**What does a 29/32 in drill clear?**
It clears a 7/8" bolt with 0.0312" total clearance (0.0156" per side).

Source page: https://machinistcharts.com/drill-size/29-32-inch/
Updated: 2026-10-06
Publisher: MachinistCharts (https://machinistcharts.com)