33.5 mm Drill Size

metric drill

33.5 mm 1.3189 in 33.50 mm

A 33.5 mm drill measures 1.3189 in. It taps 3 threads in this chart.

What a 33.5 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 33.5 mm drill taps, with the percent of thread each one gets and the published chart drill for comparison.
Thread	% thread	Chart drill	Chart %
1-1/2-6	83.6%	1-11/32″	72.1%
M36 x 3	64.2%	33 mm	77.0%
1-3/8-12	51.8%	1-19/64″	72.1%

Other jobs for a 33.5 mm

Hard-material tap drill: The size to use in stainless or tool steel for M36 x 3, where it leaves a shallower thread than the standard drill and cuts tapping torque.

Drills either side

1-5/16″ 1.3125 in · 33.34 mm Next size down
1-21/64″ 1.3281 in · 33.73 mm Next size up

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

33.5 mm drill: common questions

What size is a 33.5 mm drill?

1.3189 inches, which is 33.50 mm. It is a metric drill.

What can I tap with a 33.5 mm drill?

3 threads: 1-1/2-6 at 83.6%, M36 x 3 at 64.2%, 1-3/8-12 at 51.8%.

What drill is next to a 33.5 mm?

Down: 1-5/16 in at 1.3125 in. Up: 1-21/64 in at 1.3281 in.