46.5 mm Drill Size

metric drill

46.5 mm 1.8307 in 46.50 mm

A 46.5 mm drill measures 1.8307 in. It taps 2 threads in this chart.

What a 46.5 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 46.5 mm drill taps, with the percent of thread each one gets and the published chart drill for comparison.
Thread	% thread	Chart drill	Chart %
M52 x 5	84.7%	47 mm	77.0%
M48 x 2	57.7%	46 mm	77.0%

Other jobs for a 46.5 mm

Hard-material tap drill: The size to use in stainless or tool steel for M48 x 2, where it leaves a shallower thread than the standard drill and cuts tapping torque.
Form-tap hole: The published roll-tap hole for M48 x 3. A form tap displaces metal instead of cutting it, so it needs this larger hole.

Drills either side

1-13/16″ 1.8125 in · 46.04 mm Next size down

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

46.5 mm drill: common questions

What size is a 46.5 mm drill?

1.8307 inches, which is 46.50 mm. It is a metric drill.

What can I tap with a 46.5 mm drill?

2 threads: M52 x 5 at 84.7%, M48 x 2 at 57.7%.

What drill is next to a 46.5 mm?

Down: 1-13/16 in at 1.8125 in.