2.6 mm Drill Size

metric drill

2.6 mm 0.1024 in 2.60 mm

A 2.6 mm drill measures 0.1024 in. It taps 3 threads in this chart.

What a 2.6 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 2.6 mm drill taps, with the percent of thread each one gets and the published chart drill for comparison.
Thread	% thread	Chart drill	Chart %
#5-44	76.5%	#37	71.1%
#5-40	69.6%	#38	72.4%
M3 x 0.5	61.6%	2.5 mm	77.0%

Other jobs for a 2.6 mm

Hard-material tap drill: The size to use in stainless or tool steel for M3 x 0.5, where it leaves a shallower thread than the standard drill and cuts tapping torque.

Drills either side

#38 0.1015 in · 2.58 mm Next size down
#37 0.104 in · 2.64 mm Next size up

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

2.6 mm drill: common questions

What size is a 2.6 mm drill?

0.1024 inches, which is 2.60 mm. It is a metric drill.

What can I tap with a 2.6 mm drill?

3 threads: #5-44 at 76.5%, #5-40 at 69.6%, M3 x 0.5 at 61.6%.

What drill is next to a 2.6 mm?

Down: #38 at 0.1015 in. Up: #37 at 0.104 in.