#8 x 1 5 8" Phillips Wafer Cement Board Screw Dagger Guard Coating, Pkg 4000 Wood to Metal Self Drilling Screws Floor loads may be adjusted Floor loads may be adjusted for other load durations according to the code Allowable loads are the lesser of the values in the hanger tables or the weld capacity refer to technical bulletin T HUHUC W The proprietary Dagger Guard coating passes the 1000 hour salt spray test and provides excellent corrosion resistance that's suitable for exterior applications These screws are designed to anchor cement board to wood or 25 20 guage metal studs and the wafer head has nibs on the bottom allowing the screw to countersink flush into the cement board