#34 Drill Size

number drill

#34 0.111 in 2.82 mm

A #34 drill measures 0.111 in. It taps 2 threads in this chart.

What a #34 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 #34 drill taps, with the percent of thread each one gets and the published chart drill for comparison.
Thread	% thread	Chart drill	Chart %
#6-40	83.1%	#33	77.0%
#6-32	66.5%	#36	77.6%

Drills either side

2.8 mm 0.1102 in · 2.8 mm Next size down
2.85 mm 0.1122 in · 2.85 mm Next size up

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

#34 drill: common questions

What size is a #34 drill?

0.111 inches, which is 2.82 mm. It is a number drill.

What can I tap with a #34 drill?

2 threads: #6-40 at 83.1%, #6-32 at 66.5%.

What drill is next to a #34?

Down: 2.8 mm at 0.1102 in. Up: 2.85 mm at 0.1122 in.