Sleeve Anchor System of Measurement Inch Anchor Diameter 1/4 in Overall Length 3 in Thread Size Not Applicable Drive Type External Hex Head Type Hex Nut Width 0.375 in Washer Outside Diameter 0.44 in Material Steel Material Grade/Class Grade 8 Finish Zinc Plated Drill Bit Size 1/4 in Compatible Material Concrete Minimum Installation Torque 4 ft-lb Maximum Installation Torque 4 ft-lb Minimum Installation Depth 1 1/4 in Minimum Hole Depth 1 1/4 in