Hammer Drive Pin Anchor Anchor Diameter 1/4 in Overall Length 1 1/2 in Thread Size Not Applicable Thread Length Not Applicable Anchor Material Nylon Pin Material Steel Finish Plain Head Type Round Head Diameter 0.56 in Head Height 0.125 in Nut Width Not Applicable Washer Outside Diameter Not Applicable Drill Bit Size 1/4 in Minimum Installation Depth 5/8 in Maximum Material Thickness 7/8 in Pin-Drive Anchor Type Nylon Removable Nail Drive Anchor System of Measurement Inch