7/32 in Drill Size

fractional drill

7/32″ 0.2188 in 5.56 mm

A 7/32 in drill is the standard tap drill for 1/4-32.

What a 7/32 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 7/32 in drill taps, with the percent of thread each one gets and the published chart drill for comparison.
Thread	% thread	Chart drill	Chart %
1/4-32 chart drill	76.9%	7/32″	76.9%
1/4-28	67.2%	#3	79.8%

Drills either side

5.5 mm 0.2165 in · 5.5 mm Next size down
5.6 mm 0.2205 in · 5.6 mm Next size up

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

7/32 in drill: common questions

What size is a 7/32 in drill?

0.2188 inches, which is 5.56 mm. It is a fractional drill.

What can I tap with a 7/32 in drill?

2 threads: 1/4-32 at 76.9%, 1/4-28 at 67.2%.

Is a 7/32 in drill the standard tap drill for anything?

Yes, for 1/4-32 (76.9% thread). That is the size published tap and drill charts give.

What drill is next to a 7/32 in?

Down: 5.5 mm at 0.2165 in. Up: 5.6 mm at 0.2205 in.