Backer-On 23411 Cement Board Screw, #10 Thread, Serrated, #2 Drive, Gimlet Point

Designed for attaching HardieBacker or equivalent fiber cement backerboard to wood or light gauge steel studs. Backer-On's patented serrated head design countersinks for flush seating at any angle, providing a smooth surface for tile. Star drive recess with T-25 bit provides for one-handed installation. Climacoat corrosion resistant finish prevents rust from bleeding into grout and are perfect for use in high moisture areas. Conforms to ANSI A108.11 for cement board attachment.