So if I touched a dry item that was najis and then used the same hand to touch several other things but then then say one of those things gets wet does that mean that that item is najis? So if item A was najis but dry, then I touched item B which then item C (all dry) however item C then got wet would item C be najis? And does this chain continue?

No, as item A did not transfer najasat. However if item A was touched with wet hands then it would make item B najis which in turn would make item C najis where the chain would stop according to most of the fuqaha.