Stop in for a cup of coffee

IN the AMCJeep book they call them Stud Retainer.
You can resell 40 of them at 50 cents a piece and come out ahead. Get the list of part numbers and applications to move them faster

I actually bought 4 off ebay for $10 shipped... didn't need 50 and with shipping/tax it was like $22.. only need one so i have spares anyway :)