Screw Anchor Anchor Diameter 3/8 in Screw Size 4 in Overall Length 4 in Thread Length 2 in Head Type Hex Head Width 0.5625 in Head Height 0.38 in Drive Type External Hex Material Steel Finish Galvanized Material Grade/Class Grade SW Removable Removable Compatible Material Concrete Drill Bit Size 3/8 in Screw Anchor Type Concrete Screw Anchor System of Measurement Inch Includes Not Applicable Maximum Material Thickness Not Applicable Minimum Installation Depth 1 1/2 in