1-23/64 in Drill Size

fractional drill

1-23/64″ 1.3594 in 34.53 mm

A 1-23/64 in drill measures 1.3594 in. It taps 2 threads in this chart.

What a 1-23/64 in 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 1-23/64 in 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	64.9%	1-11/32″	72.1%
M36 x 2	56.7%	34 mm	77.0%

Drills either side

34.5 mm 1.3583 in · 34.5 mm Next size down
1-3/8″ 1.375 in · 34.93 mm Next size up

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

1-23/64 in drill: common questions

What size is a 1-23/64 in drill?

1.3594 inches, which is 34.53 mm. It is a fractional drill.

What can I tap with a 1-23/64 in drill?

2 threads: 1-1/2-6 at 64.9%, M36 x 2 at 56.7%.

What drill is next to a 1-23/64 in?

Down: 34.5 mm at 1.3583 in. Up: 1-3/8 in at 1.375 in.