1-13/16 in Drill Size

fractional drill

1-13/16″ 1.8125 in 46.04 mm

A 1-13/16 in drill measures 1.8125 in. It taps 2 threads in this chart.

What a 1-13/16 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 1-13/16 in drill taps, with the percent of thread each one gets and the published chart drill for comparison.
Thread	% thread	Chart drill	Chart %
M48 x 2	75.6%	46 mm	77.0%
M48 x 3	50.4%	45 mm	77.0%

Drills either side

46 mm 1.811 in · 46 mm Next size down
46.5 mm 1.8307 in · 46.5 mm Next size up

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

1-13/16 in drill: common questions

What size is a 1-13/16 in drill?

1.8125 inches, which is 46.04 mm. It is a fractional drill.

What can I tap with a 1-13/16 in drill?

2 threads: M48 x 2 at 75.6%, M48 x 3 at 50.4%.

What drill is next to a 1-13/16 in?

Down: 46 mm at 1.811 in. Up: 46.5 mm at 1.8307 in.