17/64 in Drill Size

fractional drill

17/64″ 0.2656 in 6.75 mm

A 17/64 in drill measures 0.2656 in. It taps 2 threads in this chart.

What a 17/64 in drill taps

Every thread this drill cuts between 50% and 85% of thread, deepest first. Outside that band it is the wrong drill for the job, so nothing below that line is listed.

Threads a 17/64 in drill taps, with the percent of thread each one gets and the published chart drill for comparison.
Thread	% thread	Chart drill	Chart %
M8 x 1.25	77.2%	6.8 mm	73.9%
5/16-18	65.0%	F	76.9%

Other jobs for a 17/64 in

Clearance hole: The through hole a bolt passes in, not a tapped hole: close fit for 1/4-20, close fit for 1/4-28, close fit for 1/4-32. See the clearance hole chart.

Drills either side

All drill sizes → · Open this drill in the calculator →

17/64 in drill: common questions

What size is a 17/64 in drill?

0.2656 inches, which is 6.75 mm. It is a fractional drill.

What can I tap with a 17/64 in drill?

2 threads: M8 x 1.25 at 77.2%, 5/16-18 at 65.0%.

Is a 17/64 in drill used for clearance holes?

Yes: close fit for 1/4-20, close fit for 1/4-28, close fit for 1/4-32. A clearance hole is not tapped; the bolt passes through it.

What drill is next to a 17/64 in?

Down: 6.7 mm at 0.2638 in. Up: H at 0.266 in.