Concrete Anchor Screw Anchor Diameter 3/16 in Screw Size 3/16 in Overall Length 2 1/4 in Thread Length 1 7/8 in Head Type Flat Head Diameter 0.3661 in Head Height 0.125 in Drive Type Phillips Material Steel Finish Blue Ruspert Material Grade/Class Grade C Removable Removable Compatible Material Masonry Stone Wood Drill Bit Size 5/32 in Screw Anchor Type Concrete Screw Anchor System of Measurement Inch Includes Drill Bit Maximum Material Thickness 1 1/4 in