Standoff Cap Thread Size 5/16 In.-18 Cap Shape Round Cap Head Diameter 1 1/4 in Cap Head Width Not Applicable Cap Head Height 1/2 in Material Aluminum Finish Black Anodized Pack Size Small Pack System of Measurement Inch Bushing Diameter 1/2 in Cap Height Tolerance +/-0.010 in Color Black Outside Diameter Tolerance +0.000/-0.025 in Standoff Type Standoff Cap Stud Thread Length 1 1/2 in Package Quantity 2