Wedge Anchor System of Measurement Inch Anchor Diameter 1 in Thread Size 1 In.-8 Overall Length 12 in Thread Length 8 3/8 in Material Stainless Steel Material Grade/Class 18-8 Finish Plain Compatible Material Concrete Drill Bit Size 1 in Minimum Installation Depth 4 1/2 in Minimum Material Thickness Not Applicable Nut Width 1.3333 in Washer Outside Diameter 2.5 in Wedge Anchor Type Wedge Anchor Seismic Approved No ICC Approved for Cracked Concrete No