stud sizes of terminal boards, matching spade lugs?
 

seek information regarding stud sizes of connectors on terminal boards,
and which spade lugs are spec'd to fit each.

by the way, how are spade lugs sized?

stud sizes of terminal boards, matching spade lugs?
 

Suggest you go to the web sites of the manufacturers of the particular
terminal boards you're interested in and download specifications
(usually pdf documents) that should give you such info; same with the
spade lugs. But generally both would be spec'd for standard screw
sizes: numbers (4, 5, 6, 8, ...) in the US and metric (millimeters)
pretty much everywhere else. Those of us in the US that manufacture
for the international market really are using metric wherever possible,
and some day someone with some real leadership will wake up and get us
really converted over to metric. Sigh. BTW, you can (or at least used
to be able to) get rows of spade lugs on an insulating strip to match
particular barrier terminal blocks, both from the same manufacturer.

stud sizes of terminal boards, matching spade lugs?