Self Drilling Screw Finish Plain Material 410 Stainless Steel Head Type Hex Washer Drive External Hex Screw Size #12 Fastener Length 1 1/2 in Drill Point Size 3 Drill Tip Length 9/32 in Head Height 0.147 in Washer Outside Diameter 0.432 in Drive Size 5/16 in Pack Size Small System of Measurement Inch Application For Attaching Variety of Materials to Metal Up to 10 Gauge Head Color Silver Package Quantity 50