#9 Drill Size

number drill

#9 0.196 in 4.98 mm

A #9 drill measures 0.196 in. It taps 2 threads in this chart.

What a #9 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 #9 drill taps, with the percent of thread each one gets and the published chart drill for comparison.
Thread	% thread	Chart drill	Chart %
1/4-20	83.1%	#7	75.4%
M6 x 1	78.7%	5 mm	77.0%

Other jobs for a #9

Clearance hole: The through hole a bolt passes in, not a tapped hole: normal fit for #8-32, normal fit for #8-36. See the clearance hole chart.

Drills either side

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

#9 drill: common questions

What size is a #9 drill?

0.196 inches, which is 4.98 mm. It is a number drill.

What can I tap with a #9 drill?

2 threads: 1/4-20 at 83.1%, M6 x 1 at 78.7%.

Is a #9 drill used for clearance holes?

Yes: normal fit for #8-32, normal fit for #8-36. A clearance hole is not tapped; the bolt passes through it.

What drill is next to a #9?

Down: #10 at 0.1935 in. Up: 5 mm at 0.1969 in.