Backer-On Cement Board Screw 9 × 1-5/8″ (140 Count)

Upgrade your cement board installations with the Backer-On No. 9 × 1-5/8″ Cement Board Screws. Designed for both professional contractors and DIY enthusiasts, these screws offer exceptional holding power and a flush finish every time. Whether you’re installing backer board for tile, siding, or other cementitious panels, you can count on Backer-On for reliable performance and corrosion resistance.

Built to streamline your workflow, these screws eliminate the need for pre-drilling and minimize cam-out thanks to their Star drive. The serrated threads bite into the substrate, ensuring a rock-solid bond, while the flat head guarantees a smooth, countersunk finish that’s easy to cover or seal. Packaged in a convenient 140-piece clamshell, they’re always within reach on the job site or in your toolbox.

Key Features

• Star drive head reduces stripping and cam-out
• Serrated threads for superior pull-out resistance
• Self-drilling, self-tapping design—no pilot hole required
• Flat head profile for a flush, professional finish
• Zinc-plated steel construction for long-lasting corrosion protection
• Distinctive green coating for quick identification
• Bulk 140-count pack keeps you stocked for larger projects