24 mm Drill Size

metric drill

24 mm 0.9449 in 24.00 mm

A 24 mm drill is the standard tap drill for M27 x 3.

What a 24 mm 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 24 mm drill taps, with the percent of thread each one gets and the published chart drill for comparison.
Thread	% thread	Chart drill	Chart %
1-20	84.8%	61/64″	72.2%
M27 x 3 chart drill	77.0%	24 mm	77.0%
1-12	50.9%	59/64″	72.1%

Drills either side

15/16″ 0.9375 in · 23.81 mm Next size down
61/64″ 0.9531 in · 24.21 mm Next size up

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

24 mm drill: common questions

What size is a 24 mm drill?

0.9449 inches, which is 24.00 mm. It is a metric drill.

What can I tap with a 24 mm drill?

3 threads: 1-20 at 84.8%, M27 x 3 at 77.0%, 1-12 at 50.9%.

Is a 24 mm drill the standard tap drill for anything?

Yes, for M27 x 3 (77.0% thread). That is the size published tap and drill charts give.

What drill is next to a 24 mm?

Down: 15/16 in at 0.9375 in. Up: 61/64 in at 0.9531 in.