I guess I just have a different perspective I used to have to go to the hardware store pretty much daily to keep a business in business...Buddy, the only chill that is in order is your triggered reaction to this topic. Relax, it's an internet forum for exchanging information.
trying to get a single overpriced and often unavailable separately part from the dealer is often a useless endeavor.
"most" bolts are either metric or standard and either fine or coarse thread, once you have that memorized it's a breeze to find what you need.
then it just boils down to grade of bolt