Cap Nut, Profile Flattened Head, Material Grade/Class Not Graded, Material Steel, Finish Chrome Plated, Thread Size 5/16 In.-18, Overall Height 0.53 in, Hex Width 1/2 in, Tensile Strength 70,000 psi, Material Quality Standards ASTM 12L14, System of Measurement Inch, Color Chrome, Pack Size Small Pack, Thread Direction Right Hand, Package Quantity 5