Hex Standoff Thread Size M3-0.5 Standoff Thread Gender Female-Female Overall Length 6 mm Body Length 6 mm Thread Length 6 mm Body Thread Length 6 mm Hex Width 4.5 mm Square Size Not Applicable Outside Diameter 4.5 mm Shape Hex Material Stainless Steel Material Grade/Class 18-8 Finish Plain Pack Size Small Pack System of Measurement Metric Color Silver Material Quality Standards ASTM A582 Hex Width Tolerance +/-0.13 mm