11/64" drill size
A 11/64 in drill is 0.1719 in (4.37 mm). It sits between 5/32 in and 3/16 in in the fractional series; the nearest metric drill is 4.4 mm.
11/64" 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 |
|---|---|---|---|---|
| 4.3 mm | 0.1693" | −0.066 mm | −0.0026" | Smaller |
| 4.4 mm | 0.1732" | +0.034 mm | +0.0014" | 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 11/64" 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).
| Thread | Standard drill | Thread with this drill | Suits |
|---|---|---|---|
| #12-24 UNC | #16 | 82 % | Soft metals, plastics |
| M5 × 0.8 | 4.2 mm | 61 % | Hard, tough metals |
Clearance for screws and bolts
Bolts and screws a 11/64" 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 |
|---|---|---|---|---|
| #4 screw | 0.1120" | 0.0599" | 0.0299" | – |
| #5 screw | 0.1250" | 0.0469" | 0.0234" | – |
| #6 screw | 0.1380" | 0.0339" | 0.0169" | – |
| M4 bolt | 4 mm | 0.37 mm | 0.18 mm | Close fit (close 4.3, normal 4.5 mm) |
| #8 screw | 0.1640" | 0.0079" | 0.0039" | – |
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 11/64 in drill?
A 11/64 in drill is 0.1719 in, which is 4.37 mm (4.3656 mm exactly).
What is the metric equivalent of a 11/64 in drill?
The nearest metric drill is 4.4 mm, 0.034 mm larger. The other close size is 4.3 mm.
What thread can I tap with a 11/64 in drill?
It leaves about 82 % thread in #12-24 UNC and 61 % in M5 × 0.8.
Which number or letter drill is closest to 11/64 in?
#17 (0.1730 in) is the closest, 0.0011 in larger.
What does a 11/64 in drill clear?
It clears a #8 screw with 0.0079" total clearance (0.0039" per side).