When you need to fasten wood, plywood or fiber-cement board directly to steel framing without pre-drilling, this Simpson Strong-Tie F12C200FDC Self-Drilling Flat Head Screw With Wings delivers the performance you expect. Wings create a clearance hole in the top material so the shank will not ride up, then break off as the drill point engages steel. The flat countersunk head offers a clean, flush finish and the full-length machine screw threads provide high holding power through sheet material into steel. Crafted of 410 stainless steel with a self-drilling point, this screw is engineered for demanding applications such as wood-to-steel or panel-to-steel installs.
Key Features
- Winged Self-Drilling Point: Wings ahead of the drill point bore a clearance hole through wood or panel so the shank does not ride up. They break off when the steel is engaged.
- Flat Countersunk Head with Nibs: The wafer-style head seats flush into the material, while under-head nibs assist with self-countersinking for a clean finish.
- Full-Length Machine Threads: Provides maximum engagement in the substrate and consistent load transfer from the panel into the steel backing.
- High-Strength 410 Stainless Steel: Hardened for drilling into steel up to approximately 0.209 inches thick.
- Square Drive System: Designed for 3 square bit compatibility, improving installation control and tool engagement.
Applications
- Attaching wood framing, plywood substrates or fiber-cement board to light-gauge steel studs, track or structural backup.
- Ideal for wood-to-steel connections in interior framing, tenant finish-outs, drywall installations, and furring channel systems.
- Used in both commercial and residential builds where flush finishes and strong, fast-driving connections are required.
- Suited for board-to-steel applications with steel up to approximately 0.209 inches in thickness.
Installation
- Select the appropriate screw length and diameter for full penetration into the steel and full thread engagement in the substrate.
- Use a power driver with a 3 square-drive bit. Set torque to prevent over-driving or damaging the screw head.
- Drive the screw perpendicular to the surface. Wings will create a clearance hole and break off as the point reaches the steel.
- Continue until the flat head is seated flush with the panel surface. Avoid excessive countersinking.
- Ensure the backing material and environment are suitable for 410 stainless steel. Choose a higher corrosion-resistant screw for wet or exterior environments.
- Follow all recommended fastener spacing and substrate support guidelines for optimal performance and safety.
