I am getting ready for the winter months and buying ahead for some upgrades and fixing stuff that was done in one manner and after looking at it found a better way to do it. Anyways I have been digging through the different sites and catalogs and came across the McMaster-Carr site and I'm in connector heaven here. I found almost every type of connector, plug, socket and sleeving one could want and at the right price... cheap. I know this is a contractors catalog and some of you guys may have been using these guys for years but for the less informed on where to buy folks this is a great site.
I was looking for the stainless bradded sleeving and found it in various sizes from 1/4 up to 1 1/2 for very reasonable prices ranging from 2.10 - 7.38 per ft. As far as the connectors go it looks like the sky is the limit here. They also carry those hard to find Stainless steel screws and bolts in English and Metric thread.
http://www.mcmaster.com/