Tap Drill Size Chart

3/16 in Drill Size

fractional drill

3/16″ 0.1875 in 4.76 mm

A 3/16 in drill measures 0.1875 in. It taps 3 threads in this chart.

What a 3/16 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 3/16 in drill taps, with the percent of thread each one gets and the published chart drill for comparison.
Thread % thread Chart drill Chart %
#12-32 70.2% #13 76.4%
#12-28 61.4% #14 73.3%
#12-24 52.7% #16 72.1%

Other jobs for a 3/16 in

Hard-material tap drill
The size to use in stainless or tool steel for #12-28, where it leaves a shallower thread than the standard drill and cuts tapping torque.

Drills either side

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

3/16 in drill: common questions

What size is a 3/16 in drill?
0.1875 inches, which is 4.76 mm. It is a fractional drill.
What can I tap with a 3/16 in drill?
3 threads: #12-32 at 70.2%, #12-28 at 61.4%, #12-24 at 52.7%.
What drill is next to a 3/16 in?
Down: 4.7 mm at 0.185 in. Up: #12 at 0.189 in.