9 x 1-5/8 in. Star Drive Screws
Updated September 17, 2026
| Lot number | 310z |
| Auction | 1059 HOME IMPROVEMENT AUCTION ~NORRY~ |
| Date | September 20, 2026 at 9:00 AM EDT |
| Auction house | Rockey Auctions |
| Location | NORTHUMBERLAND, Pennsylvania |
Model: 23510 Retail Price: $12 Backer-On Rock-On 1-5/8 in. Cement Board Screws are designed for attaching Hardie Backer or equivalent fiber cement backerboard to wood or light gauge steel studs. Backer-On Rock-On's patented serrated head design countersinks for flush seating at any angle, providing a smooth surface for tile. The Star drive recess with T-25 bit provides Stikfit for 1-handed installation. Backer-On Rock-On screws feature a Climacoat corrosion resistant finish that prevents rust from bleeding into grout and are perfect for use in high moisture areas such as baths, showers, countertops and floors. Conforms to ANSI A108.11 for cement board attachment. 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.. Star drive with T-25 bit provides Stikfit for easy 1-handed installation and eliminates cam-outs. Conforms to ANSI A108.11 standards for cement board attachment. Premium corrosion resistant finish. Serrated thread forms require less torque for faster installation. Use to attach cement board to wood or light gauge steel studs. Serrated head design for flush seating even at an angle. Patented design allows attaching close to edge on cement board, reducing fractures or blow outs. Patented sharp point offers immediate pick-up and eliminates the need to pre-drill. Disclaimer : DISCLAIMER: This listing contains a stock image of the item to be auctioned, in order to illustrate the item’s design and functionality when new. However, this stock image is provided for ILLUSTRATION PURPOSES ONLY and cannot be relied upon by any bidder. Instead, actual photos of the specific item up for auction are provided within the gallery. Any written overview regarding features, operations, or capabilities reflects the item’s original specification when new and does not guarantee current condition or complete performance. The absence of any description by Rockey Auction of the item to be auctioned does not establish an implied representation that it is new or functional. It is a bidder's sole responsibility to inspect all actual product photos, read descriptions carefully, and perform any desired pre-bid inspections or inquiries. Bids placed constitute full acknowledgment and satisfaction with the item's condition along with Rockey Auction’s terms AND CONDITIONS of sale, which can be found in full in the tab below.
