Phillips Bugle Head Full Thread Self Drilling Drywall Screw Zinc

Fine thread Drywall--Sharp point: For attaching drywall to metal studs from 25 gage through 20 gage thick. Longer sizes are ideal for multiple layers or insulation. Fine thread Drywall--Drill point: Will drive easily through drywall, drill a hole in a steel stud up to 14 gage thick, and form its own mating thread. Can also be used for attaching plywood or insulation board to 14 gage metal