# #36 drill size

A #36 drill is 0.1065 in (2.71 mm). It is the standard tap drill for #6-32 UNC; the nearest metric drill is 2.7 mm.

## #36 drill data

- Series: Number drill
- Decimal: 0.1065 in
- Metric: 2.71 mm (2.7051 mm exact)
- Nearest metric drill: 2.7 mm (−0.005 mm)
- Nearest fractional: 7/64" (0.1094 in)
- Standard tap drill for: #6-32 UNC

## Nearest metric drills

| Metric drill | Inch | Difference |
|---|---|---|
| 2.7 mm | 0.1063 | −0.005 mm |
| 2.75 mm | 0.1083 | +0.045 mm |

## Nearby inch drills

| Drill | Series | Inch | mm |
|---|---|---|---|
| 3/32" | Fractional | 0.0938 | 2.38 |
| #37 | Number | 0.1040 | 2.64 |
| #36 | Number | 0.1065 | 2.71 |
| 7/64" | Fractional | 0.1094 | 2.78 |
| #35 | Number | 0.1100 | 2.79 |
| Letter A | Letter | 0.2340 | 5.94 |

## Threads this drill can tap

| Thread | Standard drill | Thread % with this drill |
|---|---|---|
| #6-32 UNC | #36 | 78 |
| M3 × 0.35 | 2.65 mm | 65 |
| #5-44 UNF | #37 | 63 |
| #5-40 UNC | #38 | 57 |

## Clearance

| Fastener | Diameter | Clearance | Per side | ISO 273 |
|---|---|---|---|---|
| #1 screw | 0.0730" | 0.0335" | 0.0168" | – |
| #2 screw | 0.0860" | 0.0205" | 0.0103" | – |
| M2.5 bolt | 2.5 mm | 0.21 mm | 0.10 mm | Close fit (close 2.7, normal 2.9 mm) |
| #3 screw | 0.0990" | 0.0075" | 0.0037" | – |


## FAQ

**What size is a #36 drill?**
A #36 drill is 0.1065 in, which is 2.71 mm (2.7051 mm exactly).

**What is the metric equivalent of a #36 drill?**
The nearest metric drill is 2.7 mm, 0.005 mm smaller. The other close size is 2.75 mm.

**What tap uses a #36 drill?**
A #36 drill is the standard tap drill for #6-32 UNC (about 78 % thread).

**Which fractional drill is closest to #36?**
7/64 in (0.1094 in) is the closest, 0.0029 in larger.

**What does a #36 drill clear?**
It clears a #3 screw with 0.0075" total clearance (0.0037" per side).

Source page: https://machinistcharts.com/drill-size/number-36/
Updated: 2026-10-06
Publisher: MachinistCharts (https://machinistcharts.com)