Wedge Anchor System of Measurement Inch Anchor Diameter 1/2 in Thread Size 1/2 In.-13 Overall Length 2 3/4 in Thread Length 1 in Material Steel Material Grade/Class Medium Carbon Finish Zinc Plated Compatible Material Concrete Drill Bit Size 1/2 in Minimum Installation Depth 2 1/4 in Minimum Material Thickness 4 in Nut Width 0.75 in Washer Outside Diameter 1.0625 in Wedge Anchor Type Wedge Anchor Seismic Approved Yes ICC Approved for Cracked Concrete Yes