Having rebuilt my series Land Rover over the years I have a bin for imperial stainless (mainly UNF) plus one for metric fittings and a third for washers of various types. The former nicely covers most of the body/chassis/suspension fittings on my Roadster. I keep each bin topped up as I run out of any particular nut, popular length bolt or washer so I can be assured when needed the correct ones are there. For the most part except in critical load situations old fittings get replaced with stainless after dismantling as I hate to see rusty ones.
