9/64 in Drill Size

fractional drill

9/64″ 0.1406 in 3.57 mm

A 9/64 in drill measures 0.1406 in. It taps 2 threads in this chart.

What a 9/64 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 9/64 in drill taps, with the percent of thread each one gets and the published chart drill for comparison.
Thread	% thread	Chart drill	Chart %
#8-36	64.8%	#29	77.6%
#8-32	57.6%	#29	69.0%

Other jobs for a 9/64 in

Clearance hole: The through hole a bolt passes in, not a tapped hole: close fit for #5-40, close fit for #5-44. See the clearance hole chart.

Drills either side

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9/64 in drill: common questions

What size is a 9/64 in drill?

0.1406 inches, which is 3.57 mm. It is a fractional drill.

What can I tap with a 9/64 in drill?

2 threads: #8-36 at 64.8%, #8-32 at 57.6%.

Is a 9/64 in drill used for clearance holes?

Yes: close fit for #5-40, close fit for #5-44. A clearance hole is not tapped; the bolt passes through it.

What drill is next to a 9/64 in?

Down: #28 at 0.1405 in. Up: 3.6 mm at 0.1417 in.