Mechanic's and maker's best friend
This is probably super basic for most here, to the point of "put diesel fuel in your diesel fuel tank, but I'm posting this as a "just in case." McMaster Carr is a resource you HAVE to have on your bookmarks/favorites of your browser (or the app on your phone) From every piece to make Rob’s DIY AFC Live, to 3/8" 6061 aluminum plate for your trans skid plate, to that m1.59 torx button-head screw, they have damned near everything you need in a fab or mechanic's shop. https://www.mcmaster.com/