Sleeve Anchor System of Measurement Inch Anchor Diameter 5/16 in Overall Length 1 1/2 in Thread Size 1/4 In.-20 Drive Type External Hex Head Type Hex Nut Width 0.4375 in Washer Outside Diameter 0.63 in Material Steel Material Grade/Class Not Graded Finish Zinc Plated Drill Bit Size 5/16 in Compatible Material Concrete Masonry Minimum Installation Torque 8 ft-lb Maximum Installation Torque 8 ft-lb Minimum Installation Depth 1 in Minimum Hole Depth 3/8 in