Hex Standoff Thread Size M4-0.7 Standoff Thread Gender Female-Female Overall Length 20 mm Body Length 20 mm Thread Length 20 mm Body Thread Length 20 mm Hex Width 6 mm Square Size Not Applicable Outside Diameter 6 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