This listing is for 5/16”-18 Black phosphate fender bolts. Please choose the length needed from the drop down menu, then select whether you would like a 10 or 25 pack of bolts.
You may select a length of 13/16” (20.64mm) or 1” (25.4mm) hex head fender bolts using the drop down menu.
18TPI Thread size. Hex head uses a 1/2” socket.
21/32” O.D washer head.
Fits most GM vehicles from 1950's-1980's.