Expansion Anchor Anchor Diameter 1/2 in Overall Length 1 5/16 in Screw Size 1/4 in Thread Size 1/4 In.-20 Thread Depth 1.3125 in Thread Type Coarse Material Zinc Alloy Finish Plain Drill Bit Size 1/2 in Minimum Installation Depth 1 5/16 in Ultimate Shear Strength (4 000 psi Concrete) 1 750 lb Maximum Ultimate Shear Strength 1 750 lb Ultimate Tension Strength (4 000 psi Concrete) 2 410 lb Maximum Ultimate Tension Strength 2 410 lb System of Measurement Inch