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