29.5 mm Drill Size

metric drill

29.5 mm 1.1614 in 29.50 mm

A 29.5 mm drill is the standard tap drill for M33 x 3.5.

What a 29.5 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 29.5 mm drill taps, with the percent of thread each one gets and the published chart drill for comparison.
Thread	% thread	Chart drill	Chart %
1-1/4-12	81.8%	1-11/64″	72.1%
M33 x 3.5 chart drill	77.0%	29.5 mm	77.0%

Other jobs for a 29.5 mm

Form-tap hole: The published roll-tap hole for M30 x 1.5. A form tap displaces metal instead of cutting it, so it needs this larger hole.

Drills either side

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

29.5 mm drill: common questions

What size is a 29.5 mm drill?

1.1614 inches, which is 29.50 mm. It is a metric drill.

What can I tap with a 29.5 mm drill?

2 threads: 1-1/4-12 at 81.8%, M33 x 3.5 at 77.0%.

Is a 29.5 mm drill the standard tap drill for anything?

Yes, for M33 x 3.5 (77.0% thread). That is the size published tap and drill charts give.

What drill is next to a 29.5 mm?

Down: 1-5/32 in at 1.1562 in. Up: 1-11/64 in at 1.1719 in.