No. 9 X 2-1/4 In. L Star Flat Head Serrated Cement Board Screws

Backer-On cement board screws are specialty fasteners engineered to securely fasten cement board in construction and renovation projects. These screws feature a star drive flat head design with serrated threads that lock firmly into cement board material, making them ideal for bathrooms, kitchens, and other areas where moisture resistance is critical. The self-drilling and self-tapping design eliminates the need for pre-drilling, allowing fasteners to penetrate and set in one motion for efficient installation.

Whether you're a professional contractor or a DIY enthusiast tackling home improvement projects, these screws deliver reliable holding power and a clean, flush finish. The serrated thread pattern ensures consistent performance, while the zinc-plated finish provides enhanced corrosion resistance suitable for indoor use.

Features and Benefits

• Star Drive Flat Head: Reduces the risk of stripping during installation and allows for flush mounting that provides a clean finish.
• Self-Drilling and Self-Tapping: Designed to penetrate and tap in one motion, eliminating pre-drilling and saving time and effort on the job.
• Serrated Threads: Superior holding power locks the screw firmly into cement board material for secure, long-lasting installations.
• Zinc-Plated Finish: Enhanced corrosion resistance suitable for indoor use, particularly in moisture-prone areas.
• Bulk Pack: Contains 100 screws per package, ideal for larger projects and professional use.

Specifications

• Brand: Backer-On
• Model: 23520
• Size: No. 9 x 2-1/4 in.
• Head Type: Star drive flat head
• Thread Style: Serrated
• Finish: Zinc-plated
• Count: 100 screws per package