I had a garage (Tire something or other) strip four lug screws before they advised me they were so rusty they stripped. I asked them if they knew they were left hand screws, Of course not. never heard of that. They did replace all of them with right hand screws, and new nuts. Now I have three wheels with right hand screws and one left hand. Handy. Thanks Guys.
Four of them, was I steamed! Every one of them had an L stamped on the end, but of course they never looked. Thanks for letting me rant.