Standoff, Thread Size 5/16 In.-18, Standoff Thread Gender Female-Female, Cap Head Height Not Applicable, Cap Head Diameter Not Applicable, Overall Length 1 1/4 in, Body Length 1 1/4 in, Thread Length 1/2 in, Body Thread Length 1/2 in, Hex Width Not Applicable, Square Size Not Applicable, Outside Diameter 1 1/2 in, Shape Round, Material Aluminum, Finish Black Anodized, Pack Size Small Pack, System of Measurement Inch, Color Black, Overall Length Tolerance +/-0.010 in