When it’s time to attach fiber-cement board, plywood or panel overlays to light-gauge steel, this Daggerz Self-Drilling Fiber Cement Board Screw with Wings and premium Dagger-Ceramic coating delivers speed, precision and durability. The engineered self-drilling point and winged design create a clean clearance hole through the cement board, so the wafer head seats flush and the connection remains tight. With corrosion-resistant coating rated for exterior environments and multiple length and diameter variants available, it’s a go-to for professionals and DIYers who demand reliability in tough assemblies.

Key Features

• Self-Drilling Point: Eliminates the need for pre-drilling when fastening into steel framing.
• Winged Design: Wings bore out a clearance hole through the cement board, preventing board walk-up; they snap off when engaging the steel substrate.
• Wafer Head with Nibs: Broad bearing surface ensures a flush finish, while underhead nibs improve countersinking without damaging the board face.
• Dagger-Ceramic Coating: Corrosion-resistant finish tested to 1,000-hour salt spray performance, making it suitable for exterior or high-humidity interior applications.
• Purpose-Built for Cement-to-Steel: Ideal for applications that require secure fastening of fiber cement board or sheathing to light-gauge steel framing.

Applications

• Attaching fiber cement board or panels to steel studs or track in both residential and commercial framing systems.
• Installing cement backer boards for cladding, siding, and soffit applications.
• Commercial interiors, tenant finishes, soffit framing, or exterior panel support systems.
• Use cases where drilling speed, corrosion resistance, and a low-profile head are essential.

Installation

1. Select the correct screw length and diameter for full steel penetration and thread engagement.
2. Use a power driver with a #2 Phillips bit. Set the clutch to avoid overdriving into the cement board or steel.
3. Drive perpendicular to the surface. The wings will cut a clearance hole through the board and snap off upon engaging the steel.
4. Stop driving when the wafer head is flush with the surface — avoid over-torquing or distorting the panel face.
5. Ensure steel thickness is appropriate for self-drilling screw performance, and that environmental conditions match the ceramic-coated screw’s corrosion resistance rating.
6. Follow manufacturer spacing and fastening patterns to maintain structural integrity and prevent cracking.