It's a lot of browsing to get to these fittings on summits site, and you can't link a page, try just plugging in the numbers to their search feature. Or just call, they are open 24-7
Here's another LINK, Essex parts carries Earls, on page 8 is your fitting, on page 9 is a section about AN fittings if you want to learn, also has a size chart.
If you really want an extensive education on plumbing check Carroll Smith's Nuts, Bolts, fasteners and plumbing handbook.
Thanks for the links. I searched high and low on the Summit site and did not find it. I even called Summit this morning but I could not seem to get the guy to understand what I wanted. The part he found was $28.00 so I knew he did not have the right part. The # you gave me took me right to it /ubbthreads/images/graemlins/smile.gif. I'll call Summit in the AM! I better e-mail Robert and tell him not to send it.
I added the Earl's site to my favorites.