Sleeve Anchor System of Measurement Inch Anchor Diameter 5/16 in Overall Length 3 in Thread Size 1/4 in Drive Type External Hex Head Type Hex Nut Width 0.42795 in Washer Outside Diameter 0.62 in Material Steel Material Grade/Class Not Graded Finish Zinc Plated Drill Bit Size Not Applicable Compatible Material Block Concrete Masonry Minimum Installation Torque Not Applicable Maximum Installation Torque Not Applicable Minimum Installation Depth 1 1/4 in