Anchor Rivet Anchor Diameter 1/4 in Overall Length 1 in Thread Size Not Applicable Thread Length Not Applicable Anchor Material Nylon Pin Material Steel Finish Plain Head Type Round Head Diameter 0.425 in Head Height 0.125 in Nut Width Not Applicable Washer Outside Diameter 0.437 in Drill Bit Size 1/4 in Minimum Installation Depth 1/2 in Maximum Material Thickness 29/32 in Pin-Drive Anchor Type Nylon Removable Nail Drive Anchor System of Measurement Inch