Self Drilling Screw Finish Zinc Plated Material Steel Head Type Hex Washer Drive External Hex Screw Size #12 Fastener Length 2 in Drill Point Size 3 Drill Tip Length 23/64 in Head Height 0.155 in Washer Outside Diameter 0.551 in Drive Size 5/16 in Pack Size Small System of Measurement Inch Application For Attaching Variety of Materials to Metal up to 3 Gauge Head Color Silver Package Quantity 100