25/32 in Drill Size

fractional drill

25/32″ 0.7812 in 19.84 mm

A 25/32 in drill measures 0.7812 in. It taps 3 threads in this chart.

What a 25/32 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 25/32 in drill taps, with the percent of thread each one gets and the published chart drill for comparison.
Thread	% thread	Chart drill	Chart %
M22 x 2	83.0%	20 mm	77.0%
M22 x 2.5	66.4%	19.5 mm	77.0%
7/8-9	65.0%	49/64″	75.8%

Other jobs for a 25/32 in

Hard-material tap drill: The size to use in stainless or tool steel for 7/8-9, where it leaves a shallower thread than the standard drill and cuts tapping torque.
Clearance hole: The through hole a bolt passes in, not a tapped hole: close fit for 3/4-10, close fit for 3/4-16, close fit for 3/4-20. See the clearance hole chart.

Drills either side

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25/32 in drill: common questions

What size is a 25/32 in drill?

0.7812 inches, which is 19.84 mm. It is a fractional drill.

What can I tap with a 25/32 in drill?

3 threads: M22 x 2 at 83.0%, M22 x 2.5 at 66.4%, 7/8-9 at 65.0%.

Is a 25/32 in drill used for clearance holes?

Yes: close fit for 3/4-10, close fit for 3/4-16, close fit for 3/4-20. A clearance hole is not tapped; the bolt passes through it.

What drill is next to a 25/32 in?

Down: 19.8 mm at 0.7795 in. Up: 19.9 mm at 0.7835 in.