Self Drilling Screw Finish Zinc Plated Material Steel Head Type Hex Washer Drive External Hex Screw Size #10 Fastener Length 3/4 in Drill Point Size 3 Drill Tip Length 23/64 in Maximum Drilling Thickness 0.175 in Head Width 0.313 in Head Height 0.205 in Washer Outside Diameter 0.435 in Drive Size 5/16 in Pack Size Small System of Measurement Inch Maximum Head Width 0.313 in Minimum Head Width 0.313 in Application HVAC Applications Vibration Resistance Head Color Silver