29 mm Drill Size

metric drill

29 mm 1.1417 in 29.00 mm

A 29 mm drill measures 1.1417 in. It taps 2 threads in this chart.

What a 29 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 29 mm drill taps, with the percent of thread each one gets and the published chart drill for comparison.
Thread	% thread	Chart drill	Chart %
1-1/4-7	58.4%	1-7/64″	75.8%
M30 x 1.5	51.3%	28.5 mm	77.0%

Other jobs for a 29 mm

Hard-material tap drill: The size to use in stainless or tool steel for M30 x 1.5, where it leaves a shallower thread than the standard drill and cuts tapping torque.
Form-tap hole: The published roll-tap hole for M30 x 2. A form tap displaces metal instead of cutting it, so it needs this larger hole.

Drills either side

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29 mm drill: common questions

What size is a 29 mm drill?

1.1417 inches, which is 29.00 mm. It is a metric drill.

What can I tap with a 29 mm drill?

2 threads: 1-1/4-7 at 58.4%, M30 x 1.5 at 51.3%.

What drill is next to a 29 mm?

Down: 1-9/64 in at 1.1406 in. Up: 1-5/32 in at 1.1562 in.