Simpson Strong-Tie SDCFC8X120-R50 SDCFC TIMBER-CFC Screws are engineered for heavy-duty fastening in mass timber and CLT construction. Designed for structural performance, these screws are ICC-ES code listed and tested for demanding applications including curtain-wall framing, nail-laminated timber (NLT), and cross-laminated timber (CLT) panels.

Crafted from high-strength carbon steel with a double-barrier coating, the SDCFC screw provides excellent corrosion protection for dry interior environments. Its fully-threaded design and compact head allow for high-strength connections with minimal visual impact-perfect for exposed applications where aesthetics matter.

Whether you’re building commercial timber structures or intricate wood assemblies, these structural wood screws offer performance you can trust.

Key Features:

• Fully-Threaded Design: Offers uniform load distribution and high withdrawal resistance, ideal for CLT and mass timber connections.
• Double-Barrier Coating: Provides corrosion resistance in dry interior environments.
• Compact Cylinder Head: Easily countersinks into timber for flush installation and clean finishes.
• ICC-ES Code Listed (ESR-3046): Tested and approved for structural use in mass timber and engineered wood assemblies.
• Pre-Drilling Optional: Can be installed without pre-drilling in most timber materials, saving time on the jobsite.

Applications:

• Curtain-wall framing
• Cross-laminated timber (CLT) panel connections
• Nail-laminated timber (NLT) assemblies
• General mass timber construction
• Exposed timber-to-timber joinery where aesthetics and strength are both priorities

Installation Tips:

• Use with compatible Simpson Strong-Tie drive tools for optimal performance.
• Recommended torque settings vary by length and timber density-refer to ICC-ESR-3046 or manufacturer guidelines.
• No pre-drilling required for most applications, but may be recommended for dense engineered woods.