Screw Anchor Anchor Diameter 1/4 in Screw Size 2 1/4 in Overall Length 2 1/4 in Thread Length 1 5/8 in Head Type Hex Head Width 0.4375 in Head Height 0.33 in Drive Type External Hex Material Steel Finish Zinc Plated Material Grade/Class Grade SW Removable Removable Compatible Material Concrete Drill Bit Size 1/4 in Screw Anchor Type Concrete Screw Anchor System of Measurement Inch Includes Not Applicable Maximum Material Thickness Not Applicable Minimum Installation Depth 1 in