Screw Anchor Anchor Diameter 1/2 in Screw Size 8 in Overall Length 8 in Thread Length 4 1/4 in Head Type Hex Head Width 0.75 in Head Height 0.48 in Drive Type External Hex Material Steel Finish Galvanized Material Grade/Class Grade SW Removable Removable Compatible Material Concrete Drill Bit Size 1/2 in Screw Anchor Type Concrete Screw Anchor System of Measurement Inch Includes Not Applicable Maximum Material Thickness Not Applicable Minimum Installation Depth 1 3/4 in