8-18X2 5/8 Phillips Bugle Head Full Thread Self Drilling Drywall Screw Zinc (Pack Qty 1,600) BC-0842KPGZ

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 AISI 1018 or equivalent steel Screws shall be quenched in liquid and then tempered by reheating to 650°F minimum