Expansion Anchor, Anchor Diameter 7/8 in, Overall Length 2 3/16 in, Screw Size 1/2 in, Thread Size 1/2 In.-13, Thread Depth 2.1875 in, Thread Type Coarse, Material Zinc Alloy, Finish Plain, Drill Bit Size 7/8 in, Minimum Installation Depth 2 3/16 in, Ultimate Shear Strength (4,000 psi Concrete) 6,500 lb, Maximum Ultimate Shear Strength 6,500 lb, Ultimate Tension Strength (4,000 psi Concrete) 7,550 lb, Maximum Ultimate Tension Strength 7,550 lb, System of Measurement Inch