Self Drilling Screw Finish Plain Material 410 Stainless Steel Head Type Pan Drive Phillips Screw Size 1/4 in Fastener Length 1 1/4 in Drill Point Size 2 Drill Tip Length 5/16 in Maximum Drilling Thickness 0.068 in Head Width 0.476 in Head Height 0.169 in Washer Outside Diameter Not Applicable Drive Size #3 Pack Size Small System of Measurement Inch Maximum Head Width 0.476 in Minimum Head Width 0.457 in Maximum Head Height 0.169 in Minimum Head Height 0.156 in