3/16" x 0.793" Shank, 0.345" x 0.07" Countersunk Head, 0.125 to 0.331" Grip Range, Steel, Multi-Grip, Structural Break Stem, Rivet Rivet Type Multi-Grip, Structural Break Stem Shank Diameter 3/16 Inch Mandrel Diameter 0.122 Inch Shank Length 0.793 Inch...