'Self-Piercing Sheet Metal Screw, Head Type Hex Washer, Hardened Steel, Finish Plain, Size #8, Length 1 1/2 In, Drive Type Slotted/Hex, Driver Size 1/4 In, Head Dia 0.375 In, Head Height 0.110 In, Application Combination Lead Thread Affords Quick Starting and Fast-Driving When Fastening Sheet Metal, Package Quantity 250'