13/64 in Drill Size

fractional drill

13/64″ 0.2031 in 5.16 mm

A 13/64 in drill measures 0.2031 in. It taps 2 threads in this chart.

What a 13/64 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 13/64 in drill taps, with the percent of thread each one gets and the published chart drill for comparison.
Thread	% thread	Chart drill	Chart %
1/4-20	72.2%	#7	75.4%
M6 x 1	64.7%	5 mm	77.0%

Other jobs for a 13/64 in

Form-tap hole: The published roll-tap hole for #12-32. A form tap displaces metal instead of cutting it, so it needs this larger hole.

Drills either side

#7 0.201 in · 5.11 mm Next size down
#6 0.204 in · 5.18 mm Next size up

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

13/64 in drill: common questions

What size is a 13/64 in drill?

0.2031 inches, which is 5.16 mm. It is a fractional drill.

What can I tap with a 13/64 in drill?

2 threads: 1/4-20 at 72.2%, M6 x 1 at 64.7%.

What drill is next to a 13/64 in?

Down: #7 at 0.201 in. Up: #6 at 0.204 in.