Best Exterior Cement Board Screws for Secure Board Installation
The best choice from these options depends on board thickness, framing material, and the project’s exposure: the Power Pro screws offer a large pack and wafer head, while the Rock-On screws are longer and use a star drive. The two Hard-to-Find Fastener options share a self-piercing design and ceramic coating. None of the supplied product details confirms approval for every exterior cement-board system, so verify the board maker’s fastening specifications before installation.
| Product | Best suited for | Key detail |
|---|---|---|
| Power Pro Gray Wafer-Head | Higher-quantity projects | 925 screws; Type 17 point |
| Rock-On 2-1/4-Inch | Installations needing a longer screw | Star drive; serrated head |
| Hard-to-Find Fastener, 157 Pack | Smaller jobs | Self-piercing tip; ceramic coating |
| Hard-to-Find Fastener, 168 Pack | Smaller jobs with more pieces | Self-piercing tip; ceramic coating |
| KURUI Drywall Anchors and Screws | Not suitable for cement-board fastening | Wall anchors and wood screws |
Power Pro Gray Wafer-Head Cement Board Screws
These #9 x 1-1/4-inch screws come in a 925-count pack. Listed features include a Type 17 self-drilling point, dual-lead serrated threads, a broad wafer head, and a gray epoxy coating described as moisture-resistant. The product is specified for fastening cement and backer board to wood or light-gauge metal studs.
Best for: Buyers fastening a larger amount of board who need a self-drilling point and broad head. It was selected for its cement-board-specific design and larger pack. The listing describes moisture resistance, but does not establish universal suitability for exterior exposure; confirm approval for the project’s materials and conditions.
Rock-On 2-1/4-Inch Star-Drive Screws
This 100-pack contains #9 x 2-1/4-inch cement-board screws. The listed features include a serrated head for flush seating, a T-25 star drive, and a serrated hi-low thread with a sharp point for immediate pickup.
Best for: Buyers whose specified assembly calls for a longer screw and who prefer a star-drive head. It was selected because the listing identifies it as a cement-board fastener and provides a distinct drive and length option. The supplied details do not state its coating or exterior corrosion rating, so do not assume it is suitable for exposed or persistently wet conditions.
Hard-to-Find Fastener Self-Piercing Screws, 157 Pack
This pack contains 157 Phillips-drive, 8 x 1-1/4-inch screws. The manufacturer describes them as steel, with a self-piercing tip that makes a pilot hole and a fine ceramic coating intended to resist rust and corrosion in high-moisture environments.
Best for: Smaller cement-board jobs where a self-piercing point and stated corrosion resistance are useful. It was selected for those cement-board-specific features. The listing does not specify an exterior-system approval or exact exposure limits, so check the installation instructions before using it outdoors.
Hard-to-Find Fastener Self-Piercing Screws, 168 Pack
This version has the same listed size and features as the 157-count option: 8 x 1-1/4-inch steel screws, Phillips drive, self-piercing tip, and fine ceramic coating described as corrosion-resistant in high-moisture environments.
Best for: Buyers who want the same listed screw specification as the 157-pack option with a higher piece count. It was selected as a relevant cement-board fastener, not as a distinct performance upgrade. The product details do not confirm suitability for all exterior applications; verify coating requirements with the cement-board manufacturer.
KURUI Drywall Anchors and Screws Kit
This 270-piece kit is listed as 135 plastic wall expansion anchors and 135 Phillips flat-head wood screws for hanging pictures or decor. Its supplied features do not identify cement-board screws or exterior fastening hardware.
Best for: General wall-hanging tasks, not cement-board installation. It is included to clarify a mismatch in the supplied product options. Avoid using this kit to fasten cement board: the listing describes drywall anchors and wood screws rather than a cement-board screw system.
Buying Guide: Choosing Exterior Cement Board Screws
Does the screw need an exterior rating?
For an exterior assembly, follow the cement-board manufacturer’s instructions for fastener type, coating, and placement. “Moisture-resistant” or “corrosion-resistant” wording alone does not confirm that a screw is approved for every exterior exposure. Consider the surrounding materials and whether the assembly will be exposed to weather, moisture, or treated lumber.
Which length and head style should you choose?
Match screw length to the board thickness and framing specified by the installation system. The listed options include 1-1/4-inch screws and a 2-1/4-inch screw, but longer is not automatically better. A broad wafer head is designed to spread pressure, while the Rock-On listing emphasizes a serrated head for flush seating. Use the head style required by the board instructions.
What drive and point features matter?
Self-piercing or self-drilling points can reduce the need for pre-drilling where the product and substrate allow it. Phillips and T-25 star drives require different bits. Choose the drive that matches the screw and installation method, and avoid substituting drywall anchors or general-purpose wood screws for specified cement-board fasteners.
How many screws should you buy?
Estimate the quantity using the board layout and the manufacturer’s required fastener spacing. The options range from a 100-count pack to a 925-count pack, but pack size does not determine suitability. Check the package specifications and project instructions before ordering.
Frequently Asked Questions
Can these screws be used outdoors?
The supplied descriptions do not confirm universal exterior approval. Check the screw and cement-board manufacturers’ instructions for the specific exposure and assembly.
Are self-piercing screws always suitable for cement board?
No. A self-piercing point is a feature, not proof of compatibility with every board, substrate, or fastening schedule. Follow the product and board instructions.
Can drywall screws fasten cement board?
Do not assume they can. Use fasteners specified for cement board and the supporting framing; the listed KURUI kit is for wall hanging, not cement-board installation.
Should I choose the largest pack?
Choose a pack based on the required fastener count and the correct screw specification. A larger quantity does not make an unsuitable fastener appropriate.