..recently walked into NAPA and told the guy I needed what I thought was called a "threaded tube nut" for a 1/8" line. He said be right back and showed up with one.
I think it really depends on WHO is working when you go in. Now that we've had this discussion I think I'm going to buy me two or three for the future!
Oh, and back then it was the BOLT that told me what I needed. YOu guys ars so organized

Tim, you amaze me. lol