# 35/64" drill size

A 35/64 in drill is 0.5469 in (13.89 mm). It sits between 17/32 in and 9/16 in in the fractional series; the nearest metric drill is 13.9 mm.

## 35/64" drill data

- Series: Fractional drill
- Decimal: 0.5469 in
- Metric: 13.89 mm (13.8906 mm exact)
- Nearest metric drill: 13.9 mm (+0.009 mm)

## Nearest metric drills

| Metric drill | Inch | Difference |
|---|---|---|
| 13.8 mm | 0.5433 | −0.091 mm |
| 13.9 mm | 0.5472 | +0.009 mm |

## Nearby inch drills

| Drill | Series | Inch | mm |
|---|---|---|---|
| #1 | Number | 0.2280 | 5.79 |
| Letter Z | Letter | 0.4130 | 10.49 |
| 17/32" | Fractional | 0.5312 | 13.49 |
| 35/64" | Fractional | 0.5469 | 13.89 |
| 9/16" | Fractional | 0.5625 | 14.29 |

## Threads this drill can tap

| Thread | Standard drill | Thread % with this drill |
|---|---|---|
| M16 × 2 | 14 mm | 81 |
| 5/8-11 UNC | 17/32 | 66 |

## Clearance

| Fastener | Diameter | Clearance | Per side | ISO 273 |
|---|---|---|---|---|
| M12 bolt | 12 mm | 1.89 mm | 0.95 mm | Normal fit (normal 13.5, loose 14.5 mm) |
| 1/2" bolt | 0.5000" | 0.0469" | 0.0234" | – |


## FAQ

**What size is a 35/64 in drill?**
A 35/64 in drill is 0.5469 in, which is 13.89 mm (13.8906 mm exactly).

**What is the metric equivalent of a 35/64 in drill?**
The nearest metric drill is 13.9 mm, 0.009 mm larger. The other close size is 13.8 mm.

**What thread can I tap with a 35/64 in drill?**
It leaves about 81 % thread in M16 × 2 and 66 % in 5/8-11 UNC.

**What does a 35/64 in drill clear?**
It clears a 1/2" bolt with 0.0469" total clearance (0.0234" per side).

Source page: https://machinistcharts.com/drill-size/35-64-inch/
Updated: 2026-10-06
Publisher: MachinistCharts (https://machinistcharts.com)