Expansion Anchor Anchor Diameter 1/2 in Overall Length 1 1/4 in Screw Size 5/16 in Thread Size 5/16 in Thread Depth 1.25 in Thread Type Coarse Material Zinc Alloy Finish Plain Drill Bit Size 1/2 in Minimum Installation Depth 1 7/8 in Ultimate Shear Strength (4 000 psi Concrete) 1 510 lb Maximum Ultimate Shear Strength 1 510 lb Ultimate Tension Strength (4 000 psi Concrete) 2 000 lb Maximum Ultimate Tension Strength 2 000 lb System of Measurement Inch