1-17/64 in Drill Size

fractional drill

1-17/64″ 1.2656 in 32.15 mm

A 1-17/64 in drill measures 1.2656 in. It taps 2 threads in this chart.

What a 1-17/64 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 1-17/64 in drill taps, with the percent of thread each one gets and the published chart drill for comparison.
Thread	% thread	Chart drill	Chart %
M36 x 4	74.2%	32 mm	77.0%
1-3/8-6	50.5%	1-7/32″	72.1%

Drills either side

32 mm 1.2598 in · 32 mm Next size down
1-19/64″ 1.2969 in · 32.94 mm Next size up

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

1-17/64 in drill: common questions

What size is a 1-17/64 in drill?

1.2656 inches, which is 32.15 mm. It is a fractional drill.

What can I tap with a 1-17/64 in drill?

2 threads: M36 x 4 at 74.2%, 1-3/8-6 at 50.5%.

What drill is next to a 1-17/64 in?

Down: 32 mm at 1.2598 in. Up: 1-19/64 in at 1.2969 in.