A pin is of course quite easily measured with a micrometer. For the small holes the most convient & sufficiently accurate method is with a set of precision ground pin gages. I would think that if you haad a pin measuring .125" for instance if you could ream a perfect hole at .1255" you would be about perfect, these parts definitely do not need a sloppy fit. I can't recall offhand the sizes of all those little wire size drills without going to a chart but I think in most cases the difference between two consecutive numbered ones would give an excess of slop.
Last edited by 2-piper; 08/15/11 05:40 PM. Reason: TYPO
