# 7/32" drill size

A 7/32 in drill is 0.2188 in (5.56 mm). It sits between 13/64 in and 15/64 in in the fractional series; the nearest metric drill is 5.6 mm.

## 7/32" drill data

- Series: Fractional drill
- Decimal: 0.2188 in
- Metric: 5.56 mm (5.5562 mm exact)
- Nearest metric drill: 5.6 mm (+0.044 mm)
- Nearest number drill: #2 (0.2210 in)

## Nearest metric drills

| Metric drill | Inch | Difference |
|---|---|---|
| 5.5 mm | 0.2165 | −0.056 mm |
| 5.6 mm | 0.2205 | +0.044 mm |

## Nearby inch drills

| Drill | Series | Inch | mm |
|---|---|---|---|
| 13/64" | Fractional | 0.2031 | 5.16 |
| #3 | Number | 0.2130 | 5.41 |
| 7/32" | Fractional | 0.2188 | 5.56 |
| #2 | Number | 0.2210 | 5.61 |
| Letter A | Letter | 0.2340 | 5.94 |
| 15/64" | Fractional | 0.2344 | 5.95 |

## Threads this drill can tap

| Thread | Standard drill | Thread % with this drill |
|---|---|---|
| 1/4-28 UNF | #3 | 67 |

## Clearance

| Fastener | Diameter | Clearance | Per side | ISO 273 |
|---|---|---|---|---|
| #8 screw | 0.1640" | 0.0547" | 0.0274" | – |
| #10 screw | 0.1900" | 0.0287" | 0.0144" | – |
| M5 bolt | 5 mm | 0.56 mm | 0.28 mm | Normal fit (normal 5.5, loose 5.8 mm) |
| #12 screw | 0.2160" | 0.0028" | 0.0014" | – |


## FAQ

**What size is a 7/32 in drill?**
A 7/32 in drill is 0.2188 in, which is 5.56 mm (5.5562 mm exactly).

**What is the metric equivalent of a 7/32 in drill?**
The nearest metric drill is 5.6 mm, 0.044 mm larger. The other close size is 5.5 mm.

**What thread can I tap with a 7/32 in drill?**
It leaves about 67 % thread in 1/4-28 UNF.

**Which number or letter drill is closest to 7/32 in?**
#2 (0.2210 in) is the closest, 0.0023 in larger.

**What does a 7/32 in drill clear?**
It clears a #12 screw with 0.0028" total clearance (0.0014" per side).

Source page: https://machinistcharts.com/drill-size/7-32-inch/
Updated: 2026-10-06
Publisher: MachinistCharts (https://machinistcharts.com)