if its a real machinist your dealing with, they should have the machinery handbook.
Exactly. If one looks at machinist's toolboxes, there is a special drawer in them (on both Gersterner and Kennedy boxes) to keep the book. Every machinist I know has at least one copy - and some guys collect the older books, which are now becoming rather valuable in their own right.
All someone who is taking such a problem to a real machinist need do is learn how to specify the fit and the size tolerances on the parts. The tables in the _MH_ will give the machinist everything else he needs to know.