Thread Forming Screw, Finish Zinc-Plated, Material Steel, Head Style Round, Drive Phillips, Thread Size 1/4 In.-20, Fastener Length 27/32 in, Head Type Pan, Head and Washer Height 0.162 in, Drive Size 3, Maximum Head Width 15/32 in, Minimum Head Width Not Applicable, Maximum Head Height 5/32 in, Minimum Head Height Not Applicable, System of Measurement Inch, For Use in Systems Drilled or Punched Holes in Ductile Metal and Punch Extruded Metal, Head Height 0.162 in, Head Width 0.469 in