Scorpion #8 x 1-5/8 in. Philips Wafer Head, Hi-low Thread Cement Board Screw, 100 Count. Type INSP Indenter Hi-Low cement board fasteners are designed for attaching cement type boards to wood or (25-20 ga) metal stud. Indenter screws have a large wafer head with countersinking nibs that allow flush seating.
The screws offer an increased bearing surface that provides greater pull-through resistance. It is the ideal attachment for tile backer boards in interior high moisture areas.