On Oct 3, 2:17*am, "Michael Koblic" wrote:
What is the expected tolerance of drill bits? I have a set of fractional,
letter and number drills. No.12 to 15 (including 3/16") seem to produce the
same size hole.

--
Michael Koblic
Campbell River, BC

Have you measured the diameter of the drill bits? I could not find
tolerances on drill sizes, but drill blanks are the nominal size plus
nothing minus .0003 inches for blanks up to half inch. I would
expect drills to have about the same tolerances.

Dan