Sleeve Anchor System of Measurement Inch Anchor Diameter 3/8 in Overall Length 1 7/8 in Thread Size 5/16 in Drive Type External Hex Head Type Hex Nut Width 0.4889 in Washer Outside Diameter 0.7047 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 1/2 in