Screw Anchor Anchor Diameter 1/2 in Overall Length 6 in Head Type Hex Head Width 0.75 in Head Diameter Not Applicable Drive Type External Hex Material Steel Finish Zinc Plated Material Grade/Class Grade 5 Removable Removable Compatible Material Concrete Drill Bit Size 7/16 in Screw Anchor Type Concrete Screw Anchor System of Measurement Inch Maximum Material Thickness 4 in Maximum Ultimate Shear Strength 7 380 lb Maximum Ultimate Tension Strength 4 236 lb