Self-Drilling Screw, Finish Climaseal(TM), Material Steel, Head Type Flat, Drive Phillips, Screw Size 1/4 in, Fastener Length 3 in, Drill Point Size 4, Drill Tip Length 19/32 in, Maximum Drilling Thickness 0.25 in, Head Width 0.476 in, Head Height 0.21 in, Washer Outside Diameter Not Applicable, Drive Size #3, Pack Size Small, System of Measurement Inch, Maximum Head Width 15/32 in, Minimum Head Width Not Applicable, Maximum Head Height 13/64 in, Minimum Head Height Not Applicable