1/4" x 0.612" Shank, 0.525" x 0.105" Protruding Head, 0.132 to 0.211" Grip Range, Steel, Structural Break Stem, Rivet Rivet Type Structural Break Stem Shank Diameter 1/4 Inch Shank Length 0.612 Inch Head Type Protruding Head Diameter 0.525 Inch Head...