46 mm Drill Size

metric drill

46 mm 1.811 in 46.00 mm

A 46 mm drill is the standard tap drill for M48 x 2.

What a 46 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 mm 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 chart drill	77.0%	46 mm	77.0%
M48 x 3	51.3%	45 mm	77.0%

Other jobs for a 46 mm

Form-tap hole: The published roll-tap hole for M48 x 5. A form tap displaces metal instead of cutting it, so it needs this larger hole.

Drills either side

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46 mm drill: common questions

What size is a 46 mm drill?

1.811 inches, which is 46.00 mm. It is a metric drill.

What can I tap with a 46 mm drill?

2 threads: M48 x 2 at 77.0%, M48 x 3 at 51.3%.

Is a 46 mm drill the standard tap drill for anything?

Yes, for M48 x 2 (77.0% thread). That is the size published tap and drill charts give.

What drill is next to a 46 mm?

Down: 40.5 mm at 1.5945 in. Up: 1-13/16 in at 1.8125 in.