Rock-on #9 x 1-1/4 in. Serrated Flat Head Star Drive Cement Board Screws (185-Pack)

Rock-On 1-1/4 in. cement board screws (185 pack) are the premier fastening solutions for installing cement boards. The patented serrated head design countersinks for flush seating at any angle, providing a smooth surface for tile installation. The star drive recess combined with Stikfit bit supports easy one-handed installations and eliminates cam outs. The premium corrosion resistant finish prevents rust from bleeding into grout, making Rock-On screws the perfect choice for use in high moisture areas such as bathrooms and kitchens.

• Serrated head design for flush seating even at an angle
• Star drive with T-25 bit provides StikfitTM for easy 1-handed installation and eliminates cam-outs
• Serrated thread forms require less torque for faster installation
• Patented sharp point offers immediate pick-up and eliminates the need to pre-drill
• Patented design allows attaching close to edge on cement board, drastically reducing fractures or blow outs
• Premium corrosion resistant finish
• Use to attach cement board to wood or light gauge steel studs
• Ideal for use in high moisture areas such as showers, backsplashes, countertops and floors
• Conforms to ANSI A108.11 standards for cement board attachment