My 'hardware kit quest' began because several of my studio clients have acquired the 'DIY bug', and I ended up finishing/repairing their projects. In most cases, when a BOM said to order (example) "ten 4-40 x 1/2 machine screws" for one reason or another....they ordered exactly TEN 4-40 screws. So, while I travel with a minimal amount of hardware for repairs, I still end up at 250 miles from 'Ye Shoppe' and hence digging around on the floor at my favorite clients' workshops for hardware...LOL!
I forgot to add to that Digikey kit/list posted earlier:
http://www.mouser.com/ProductDetail/Keystone-Electronics/4701/?qs=%2fha2pyFaduhDUlkLFtT4aEc4iq7BMzaivrYZpPXwCZI%3d
The Digikey kit only includes "large pattern" 6-32 nuts.
Back here at Ye Shoppe, all of my stocked hardware is stainless steel stuff....but I believe that whatever Digikey stocks/sells is decent quality.
Bri