Expansion Anchor Anchor Diameter 1/2 in Overall Length 1 1/2 in Screw Size 1/4 in Thread Size 1/4 in Thread Depth 1.5 in Thread Type Coarse Material Zinc Alloy Finish Plain Drill Bit Size 1/2 in Minimum Installation Depth 1 1/2 in Ultimate Shear Strength (4 000 psi Concrete) 1 620 lb Maximum Ultimate Shear Strength 1 620 lb Ultimate Tension Strength (4 000 psi Concrete) 1 250 lb Maximum Ultimate Tension Strength 1 250 lb System of Measurement Inch