• Some stock photographs may show options that are not included. Please check product description.
Backer-On

#9 X 1-1/4-Inch Rock-On Green Zinc-Plated Flat Head Cement Board Screws 750-Pack

Mfg.#
9192030
Sku#
3962610

* Estimated stock levels as of Sat, Apr 11, 2026. All items subject to prior sale. Prices may vary between stores and online. Please call ahead to confirm availability of items marked as Limited Stock.

Description

Backer-On Rock-On 1-1/4 in. cement board screws are designed for attaching Hardie Backer or equivalent fiber cement backer board 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 the 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 product) for cement board fastening done right.

Specifications

General

Application Cement Board, Multi-Purpose
Color Green
Color Family Green
Drive Style Star
Driver Bit Size T25
Finish Zinc Climacoat
Head Type Flat
Includes T25 Driver Bit
Material Steel
Pack Qty 750
Thread Type Serrated
Type Drywall Screws

Dimensions

Diameter 11/64 in
Length 1.25 in

Manufacturing Details
The following information is subject to change without notice

Shop USA No

Please choose a store for pricing and availability.

Find Your Local Store
Feedback