TT: Thanks to all who replied to my inquiry regarding Bolt Depot as a source for hardware items like nuts, bolts, etc. Some of you also reminded me about McMaster-Carr as a well-known source. I also learned of two new (to me) sources: http://robnetfasteners.com/ and https://www.albanycountyfasteners.com/ . Stay safe, y'all. 73 de Gene Smar AD3F