Thread Cutting Screw Finish Zinc Plated Material Steel Head Style Pan Drive Phillips Thread Size 1/4 In.-20 Fastener Length 1/2 in Head Type Pan Head and Washer Height 0.175 in Drive Size #3 Dimensional Standards ASME B18.6.4 System of Measurement Inch Head Height 0.175 in Head Width 0.492 in Package Quantity 25