Sleeve Anchor System of Measurement Inch Anchor Diameter 1/2 in Overall Length 4 in Thread Size 3/8 In.-16 Drive Type External Hex Head Type Hex Nut Width 0.5625 in Washer Outside Diameter 1.008 in Material Steel Material Grade/Class Not Graded Finish Zinc Plated Drill Bit Size 1/2 in Compatible Material Masonry Minimum Installation Torque 34 ft-lb Maximum Installation Torque 38 ft-lb Minimum Installation Depth 1 1/2 in Minimum Hole Depth 1 1/2 in