17.3 mm Drill Size

metric drill

17.3 mm 0.6811 in 17.30 mm

A 17.3 mm drill measures 0.6811 in. It taps 4 threads in this chart.

What a 17.3 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 17.3 mm drill taps, with the percent of thread each one gets and the published chart drill for comparison.
Thread	% thread	Chart drill	Chart %
3/4-16	84.9%	11/16″	77.0%
M20 x 2.5	83.1%	17.5 mm	77.0%
M18 x 1	53.9%	17 mm	77.0%
3/4-10	53.0%	21/32″	72.2%

Other jobs for a 17.3 mm

Form-tap hole: The published roll-tap hole for M18 x 1.5. A form tap displaces metal instead of cutting it, so it needs this larger hole.

Drills either side

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17.3 mm drill: common questions

What size is a 17.3 mm drill?

0.6811 inches, which is 17.30 mm. It is a metric drill.

What can I tap with a 17.3 mm drill?

4 threads: 3/4-16 at 84.9%, M20 x 2.5 at 83.1%, M18 x 1 at 53.9%, 3/4-10 at 53.0%.

What drill is next to a 17.3 mm?

Down: 17.2 mm at 0.6772 in. Up: 17.4 mm at 0.685 in.