1-11/32 in Drill Size

fractional drill

1-11/32″ 1.3438 in 34.13 mm

A 1-11/32 in drill is the standard tap drill for 1-1/2-6.

What a 1-11/32 in 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 1-11/32 in drill taps, with the percent of thread each one gets and the published chart drill for comparison.
Thread	% thread	Chart drill	Chart %
1-1/2-6 chart drill	72.1%	1-11/32″	72.1%
M36 x 2	71.9%	34 mm	77.0%

Other jobs for a 1-11/32 in

Form-tap hole: The published roll-tap hole for 1-3/8-12. A form tap displaces metal instead of cutting it, so it needs this larger hole.
Clearance hole: The through hole a bolt passes in, not a tapped hole: normal fit for 1-1/4-7, normal fit for 1-1/4-12. See the clearance hole chart.

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1-11/32 in drill: common questions

What size is a 1-11/32 in drill?

1.3438 inches, which is 34.13 mm. It is a fractional drill.

What can I tap with a 1-11/32 in drill?

2 threads: 1-1/2-6 at 72.1%, M36 x 2 at 71.9%.

Is a 1-11/32 in drill the standard tap drill for anything?

Yes, for 1-1/2-6 (72.1% thread). That is the size published tap and drill charts give.

Is a 1-11/32 in drill used for clearance holes?

Yes: normal fit for 1-1/4-7, normal fit for 1-1/4-12. A clearance hole is not tapped; the bolt passes through it.

What drill is next to a 1-11/32 in?

Down: 34 mm at 1.3386 in. Up: 34.5 mm at 1.3583 in.