140PK 9x1-5/8" Cement Board Scws

Backer-On No. 9 X 1-5/8 in. L Star Flat Head Serrated Cement Board Screws

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. This product is engineered for dependable performance, ease of installation, and long-term durability in demanding applications.
Designed for attaching cement backerboard to wood or light gauge steel
studs
Patented serrated head design countersinks for flush seating at any angle - Helps improve installation efficiency and jobsite productivity.
Serrated thread forms require less torque for faster installation - Helps improve installation efficiency and jobsite productivity.
Ability to attach close to edge in all cement boards without fractures or blowouts - Helps improve installation efficiency and jobsite productivity. 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 - Helps improve installation efficiency and jobsite productivity
For use with all cement boards - Helps improve installation efficiency and jobsite productivity.
T-25 bit included