Part number 3831934 Nuts were used in 5 places on the 1963 thru 1967 Corvette at the perimeter mounting of the dash cluster. Nothing like the original was available until now. These exact reproduction u-nuts make the cluster installation much easier, as they do not extend into the opening and cause interference like the generic replacement nuts. These are new reproductions of the original part. There has been no correct reproduction of these nuts, just a generic version u-nut that has a hex steel nut instead of the square nut like the original. Always helps to use the correct fasteners! Note the "M" logo on each nut.