Help I lost my nuts...lol

You win, your peepee is bigger than mine. Us engineers that design machinery for a living don't know anything. You guys that service what we design, get your replacement parts from the parts catalog in the supply depot, and create the need for defensive design know way more. Carry on.
In the beginning what made you putting in your 2 cents worth that hardware store nuts and bolts are inferior to anything else that's on the market?
You could have kept your fingers off the keyboard from the get go.
And where are you really going to find anything that's made in America anymore.
So your some sort of mechanical designer, good for you in the living that you do, nothing wrong with that.
But again the op is working on a damm car, and not the Space Shuttle.

Every so often one has to get into a pissing contest on the internet.
Who would have thunk it, all over the op's question in regards to the size, and thread pitch of a nut.