57/64" drill size
A 57/64 in drill is 0.8906 in (22.62 mm). It sits between 7/8 in and 29/32 in in the fractional series; the nearest metric drill is 22.6 mm.
57/64" at a glance
Decimal, metric and the nearest sizes in the other series.
Nearest metric drills
Metric drills step by 0.05 mm below 3 mm and by 0.1 mm from 3 mm. Difference is metric minus inch size.
| Metric drill | Inch | Difference | In inches | Hole |
|---|---|---|---|---|
| 22.6 mm | 0.8898" | −0.022 mm | −0.0009" | Smaller |
| 22.7 mm | 0.8937" | +0.078 mm | +0.0031" | Larger |
Nearby inch drills
The next size down and up in each inch series, so you can pick a substitute from the drawer.
Threads a 57/64" drill can tap
Threads from the tap tables on this site that this drill can tap, with the thread percentage it leaves (55–85 % shown).
Clearance for screws and bolts
Bolts and screws a 57/64" hole clears, with the diametral clearance and the gap each side. Metric sizes are compared with ISO 273.
| Fastener | Diameter | Clearance | Per side | ISO 273, metric only |
|---|---|---|---|---|
| M20 bolt | 20 mm | 2.62 mm | 1.31 mm | Normal fit (normal 22, loose 24 mm) |
| M22 bolt | 22 mm | 0.62 mm | 0.31 mm | Tighter than close fit (23 mm) |
| 7/8" bolt | 0.8750" | 0.0156" | 0.0078" | – |
Inch clearance is the drill size minus the basic major diameter. A drilled hole usually cuts slightly oversize.
Fractional drill index
Every size in the series, holes drawn to scale.
Common questions
What size is a 57/64 in drill?
A 57/64 in drill is 0.8906 in, which is 22.62 mm (22.6219 mm exactly).
What is the metric equivalent of a 57/64 in drill?
The nearest metric drill is 22.6 mm, 0.022 mm smaller. The other close size is 22.7 mm.
What thread can I tap with a 57/64 in drill?
It leaves about 67 % thread in 1-8 UNC.
What does a 57/64 in drill clear?
It clears a 7/8" bolt with 0.0156" total clearance (0.0078" per side).