1/16 in Drill Size

fractional drill

1/16″ 0.0625 in 1.59 mm

A 1/16 in drill measures 0.0625 in. It taps 3 threads in this chart.

What a 1/16 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 1/16 in drill taps, with the percent of thread each one gets and the published chart drill for comparison.
Thread	% thread	Chart drill	Chart %
M2 x 0.4	79.5%	1.6 mm	77.0%
#1-72	58.2%	#53	74.8%
#1-64	51.7%	#53	66.5%

Other jobs for a 1/16 in

Hard-material tap drill: The size to use in stainless or tool steel for #1-72, where it leaves a shallower thread than the standard drill and cuts tapping torque.

Drills either side

1.55 mm 0.061 in · 1.55 mm Next size down
1.6 mm 0.063 in · 1.6 mm Next size up

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

1/16 in drill: common questions

What size is a 1/16 in drill?

0.0625 inches, which is 1.59 mm. It is a fractional drill.

What can I tap with a 1/16 in drill?

3 threads: M2 x 0.4 at 79.5%, #1-72 at 58.2%, #1-64 at 51.7%.

What drill is next to a 1/16 in?

Down: 1.55 mm at 0.061 in. Up: 1.6 mm at 0.063 in.