1.85 mm Drill Size

metric drill

1.85 mm 0.0728 in 1.85 mm

A 1.85 mm drill measures 0.0728 in. It taps 2 threads in this chart.

What a 1.85 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 1.85 mm drill taps, with the percent of thread each one gets and the published chart drill for comparison.
Thread	% thread	Chart drill	Chart %
#2-64	65.0%	#50	78.8%
#2-56	56.9%	#50	69.0%

Drills either side

1.8 mm 0.0709 in · 1.8 mm Next size down
#49 0.073 in · 1.85 mm Next size up

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

1.85 mm drill: common questions

What size is a 1.85 mm drill?

0.0728 inches, which is 1.85 mm. It is a metric drill.

What can I tap with a 1.85 mm drill?

2 threads: #2-64 at 65.0%, #2-56 at 56.9%.

What drill is next to a 1.85 mm?

Down: 1.8 mm at 0.0709 in. Up: #49 at 0.073 in.