Hex Standoff Thread Size M2.5-0.45 Standoff Thread Gender Male-Female Body Length 5 mm Thread Length 3.9 mm Body Thread Length 1.9 mm Hex Width 4.5 mm Square Size Not Applicable Outside Diameter 4.5 mm Shape Hex Material Aluminum Finish Plain Pack Size Small Pack System of Measurement Metric Color Silver Hex Width Tolerance +/-0.13 mm