Backer-On Cement Board Screw 9 × 1-1/4″ – 750 Count

Engineered for professional tile and backerboard installations, the Backer-On Cement Board Screw delivers reliable performance when fastening fiber cement panels to wood or light-gauge steel studs. Each #9-gauge, 1-1/4″ screw features a patented serrated head that countersinks quickly and cleanly, giving you a smooth, flush surface ready for tile or other finishes. Designed to comply with all major cement board manufacturer standards, these screws eliminate over-driving and ensure a consistent, secure hold every time.

Whether you’re installing HardieBacker®, Durock® or equivalent fiber cement backerboards, these screws are compatible with standard impact drivers or drill/drivers. A T-25 Star drive bit is included, making setup and installation fast and frustration-free.

Key Features

• Patented serrated countersink head for flush seating at any angle
• #9-gauge, 1 1/4″ length ideal for most cement board thicknesses
• T-25 Star drive bit included for immediate use
• High-quality steel construction with corrosion-resistant finish
• Designed for wood and light-gauge steel stud applications
• Meets ANSI standards for cement board installation