Wedge Anchor System of Measurement Inch Anchor Diameter 1/2 in Thread Size 1/2 In.-13 Overall Length 5 1/2 in Thread Length 4 in Eyelet Hole Size Not Applicable Material Steel Material Grade/Class Grade 2 Finish Galvanized Compatible Material Concrete Drill Bit Size 1/2 in Minimum Installation Depth 2 1/4 in Minimum Material Thickness 4 in Ultimate Shear Strength (4 000 psi Concrete) 6 828 lb Ultimate Tension Strength (4 000 psi Concrete) 5 772 lb Nut Width 0.75 in