3/16" x 0.579" Shank, 0.378" x 0.059" Dome Head, 0.138 to 0.236" Grip Range, Carbon Steel, Break Stem, Rivet Rivet Type Break Stem Shank Diameter 3/16 Inch Mandrel Diameter 0.126 Inch Shank Length 0.579 Inch Head Type Dome Head Diameter 0.378 Inch Head...