3/16" x 0.425" Shank, 0.393" x 0.055" Dome Head, 0.126 to 0.25" Grip Range, Aluminum Rivet/Steel Mandrel, Open End, Rivet Rivet Type Open End Shank Diameter 3/16 Inch Mandrel Diameter 0.114 Inch Shank Length 0.425 Inch Head Type Dome Head Diameter 0.393...