[Milsurplus] WTB: Heat dissipating plate connectors

[Mike Durff]

Looking for a source for the heat dissipating plate connectors ( metal )  & grid connectors. Some have small holes & setscrew or thumbscrews for the wire leads some  tube manufacturers used and some have large openings for the big plate caps i.e. 810, etc. I need a source for these, or, if they aren't available commercially, do any of you have any in your junque boxes? 
Thanks