Backer-On Rock-On #9 x 1-1/4 In. Star Drive Cement Board Screws (185 Ct.)

Backer-On Rock-On Cement Board Screws are designed for attaching HardieBacker or equivalent fiber cement backerboard to wood or light gauge steel studs. The patented serrated head design countersinks for flush seating at any angle, providing a smooth surface for tile. Backer-On Rock-On cement board screws comply with ANSI standards for cement board installation as specified by cement board manufacturers. Backer-On Rock-On screws can be installed with a standard impact or drill/driver and T-25 Star drive bit (included with product) for cement board fastening done right.

• Designed for attaching cement backerboard to wood or light gauge steel studs
• Patented serrated head design countersinks for flush seating at any angle
• Serrated thread forms require less torque for faster installation
• Ability to attach close to edge in all cement boards without fractures or blowouts
• Stikfit recess for one-handed driving, while eliminating cam-outs and wobbling
• Premium corrosion-resistant finish to prevent rusting from bleeding into grout
• Perfect choice for use in high moisture areas such as bathrooms and kitchens
• For use with all cement boards
• T-25 bit included