Hi Susan! I think that information needs to come from the vendor, not all press fit pins are alike, and what may be fine for a Harting press fit connector, won't be for something from AMP. Here's a good link from Harting that talks about the technology behind press fit terminations, and why solder isn't needed with a properly seated press fit pin: http://www.harkis.harting.com/WebHelp/EGds/WebHelp/GBGDSPressin_termination.ht m You might have to make sure that the link is all there if you do a copy and paste in your browser...or just type everything in with no spaces... I know Harting doesn't recommend soldering of their press fit connectors... -Steve Gregory- > Where do I find information regarding hole size, plating thickness > recommedations regarding whether these should subsequently be soldered etc? > > > I have looked in 2221 and just can't find anything > > > Susan Mansilla >