Tap Drill Size Chart

15 mm Drill Size

metric drill

15 mm 0.5906 in 15.00 mm

A 15 mm drill is the standard tap drill for M16 x 1.

What a 15 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 15 mm drill taps, with the percent of thread each one gets and the published chart drill for comparison.
Thread % thread Chart drill Chart %
M16 x 1 chart drill 77.0% 15 mm 77.0%
5/8-24 63.6% 37/64″ 86.6%
M16 x 1.5 51.3% 14.5 mm 77.0%

Drills either side

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

15 mm drill: common questions

What size is a 15 mm drill?
0.5906 inches, which is 15.00 mm. It is a metric drill.
What can I tap with a 15 mm drill?
3 threads: M16 x 1 at 77.0%, 5/8-24 at 63.6%, M16 x 1.5 at 51.3%.
Is a 15 mm drill the standard tap drill for anything?
Yes, for M16 x 1 (77.0% thread). That is the size published tap and drill charts give.
What drill is next to a 15 mm?
Down: 14.9 mm at 0.5866 in. Up: 19/32 in at 0.5938 in.