Expansion Anchor Anchor Diameter 1/2 in Overall Length 1 3/4 in Screw Size 5/16 in Thread Size 5/16 in Thread Depth 1.75 in Thread Type Coarse Material Zinc Alloy Finish Plain Drill Bit Size 1/2 in Minimum Installation Depth 1 3/4 in Ultimate Shear Strength (4 000 psi Concrete) 1 700 lb Maximum Ultimate Shear Strength 1 700 lb Ultimate Tension Strength (4 000 psi Concrete) 2 500 lb Maximum Ultimate Tension Strength 2 500 lb System of Measurement Inch