Self Drilling Screw Finish Climaseal Material Steel Head Type Hex Washer Drive External Hex Screw Size 12-14 x 1-1/2 Fastener Length 1 1/2 in Drill Point Size 2 Drill Tip Length 7/16 in Maximum Drilling Thickness 0.21 in Head Width 0.313 in Head Height 0.255 in Washer Outside Diameter 0.552 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