Concrete Anchor Screw Anchor Diameter 1/4 in Overall Length 4 in Head Type Flat Drive Type Phillips Material Stainless Steel Finish Blue Ruspert Material Grade/Class 410 Removable Removable Compatible Material Concrete Drill Bit Size 3/16 in Screw Anchor Type Concrete Screw Anchor System of Measurement Inch Maximum Material Thickness 3 in Maximum Ultimate Shear Strength 760 lb Maximum Ultimate Tension Strength 600 lb Minimum Installation Depth 1 in Body Length 4 in