11.4 mm Drill Size

metric drill

11.4 mm 0.4488 in 11.40 mm

A 11.4 mm drill measures 0.4488 in. It taps 2 threads in this chart.

What a 11.4 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 11.4 mm drill taps, with the percent of thread each one gets and the published chart drill for comparison.
Thread	% thread	Chart drill	Chart %
1/2-20	78.8%	29/64″	72.2%
1/2-13	51.2%	27/64″	78.2%

Other jobs for a 11.4 mm

Form-tap hole: The published roll-tap hole for M12 x 1.25. A form tap displaces metal instead of cutting it, so it needs this larger hole.

Drills either side

11.3 mm 0.4449 in · 11.3 mm Next size down
11.7 mm 0.4606 in · 11.7 mm Next size up

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

11.4 mm drill: common questions

What size is a 11.4 mm drill?

0.4488 inches, which is 11.40 mm. It is a metric drill.

What can I tap with a 11.4 mm drill?

2 threads: 1/2-20 at 78.8%, 1/2-13 at 51.2%.

What drill is next to a 11.4 mm?

Down: 11.3 mm at 0.4449 in. Up: 11.7 mm at 0.4606 in.