Standard Pack = 1 piece(s). Clamps Per Package = 12; Height Above Flange = 0.04 IN; Hex Key Size = 3/16 IN; Maximum Holding Force = 800 lbs; Thickness = 0.19 IN; Thread Length = 0.46 IN; Thread Size = 5/16-18 IN; Total Throw = 0.04 IN; Width Across Flats = 0.812 IN;