3/16" x 0.575" Shank, 0.375" x 0.057" Protruding Head, 0.251 to 0.375" Grip Range, Aluminum, Structural Break Stem, Rivet Rivet Type Structural Break Stem Shank Diameter 3/16 Inch Mandrel Diameter 0.114 Inch Shank Length 0.575 Inch Head Type Protruding...