SCREW POZI PAN STEEL BZP #4X1/2; Thread Size - Imperial:No.4; Thread Size - Metric:-; Screw Length:0.5"; Fastener Plating:Bright Zinc; Fastener Material:Steel; Screw Head Style:Pan Head Pozidriv; Product Range:-; SVHC:No SVHC (12-Jan-2017); Body Plating:Zinc; Driver Type:Pozi; External Length / Height:12.7mm; Height:12.7mm; Material:Steel; Thread Size:No.4