#47 Drill Size

number drill

#47 0.0785 in 1.99 mm

A #47 drill is the standard tap drill for #3-48.

What a #47 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 #47 drill taps, with the percent of thread each one gets and the published chart drill for comparison.
Thread	% thread	Chart drill	Chart %
#3-48 chart drill	75.7%	#47	75.7%

Other jobs for a #47

Form-tap hole: The published roll-tap hole for #2-64. A form tap displaces metal instead of cutting it, so it needs this larger hole.

Drills either side

#48 0.076 in · 1.93 mm Next size down
2.05 mm 0.0807 in · 2.05 mm Next size up

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

#47 drill: common questions

What size is a #47 drill?

0.0785 inches, which is 1.99 mm. It is a number drill.

What can I tap with a #47 drill?

1 thread: #3-48 at 75.7%.

Is a #47 drill the standard tap drill for anything?

Yes, for #3-48 (75.7% thread). That is the size published tap and drill charts give.

What drill is next to a #47?

Down: #48 at 0.076 in. Up: 2.05 mm at 0.0807 in.