12.5 mm Drill Size

metric drill

12.5 mm 0.4921 in 12.50 mm

A 12.5 mm drill is the standard tap drill for M14 x 1.5.

What a 12.5 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 12.5 mm drill taps, with the percent of thread each one gets and the published chart drill for comparison.
Thread	% thread	Chart drill	Chart %
M14 x 1.5 chart drill	77.0%	12.5 mm	77.0%
9/16-12	65.0%	31/64″	72.1%
M14 x 2	57.7%	12 mm	77.0%

Drills either side

12.4 mm 0.4882 in · 12.4 mm Next size down
12.6 mm 0.4961 in · 12.6 mm Next size up

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

12.5 mm drill: common questions

What size is a 12.5 mm drill?

0.4921 inches, which is 12.50 mm. It is a metric drill.

What can I tap with a 12.5 mm drill?

3 threads: M14 x 1.5 at 77.0%, 9/16-12 at 65.0%, M14 x 2 at 57.7%.

Is a 12.5 mm drill the standard tap drill for anything?

Yes, for M14 x 1.5 (77.0% thread). That is the size published tap and drill charts give.

What drill is next to a 12.5 mm?

Down: 12.4 mm at 0.4882 in. Up: 12.6 mm at 0.4961 in.