Product Description
Simpson Strong-Drive SDCF TIMBER-CF Screw - 0.470 in. x 13-3/4 in., T50, E-Coat by Simpson Strong-Tie is a heavy-duty structural fastener engineered specifically for cross-laminated timber (CLT), mass timber construction, and demanding general interior wood applications. Featuring a fully-threaded shank, a self-starting SawTooth point, and a black e-coat electrocoating finish, this timber screw delivers the combination of installation speed, withdrawal strength, and corrosion resistance that professionals rely on for wood-to-wood fastening, beam reinforcement, glulam assemblies, and engineered wood connections alike.
Key Features
- Flat head with underhead nibs - enables clean countersinking and a flush finish, reducing the need for additional finishing work in exposed timber applications
- Heavy-duty fully-threaded shank - maximizes thread engagement along the entire fastener length for superior withdrawal resistance in demanding structural connections
- SawTooth point - bites into wood fiber immediately for fast starts and easy driving, significantly reducing installation torque and eliminating the need for predrilling in most applications
- Black e-coat electrocoating finish - provides a construction-durable, nonmetallic coating that resists corrosion in interior dry-service environments while delivering a clean, finished appearance
- Deep T50 6-lobe recess - ensures a secure, cam-out-resistant drive connection, reducing bit slippage and improving driver control during installation
- Optimized hardness profile - works in conjunction with the e-coat finish to help mitigate the risk of brittle fracture, supporting long-term structural reliability
- Compliant with CSA O86:24 hydrogen embrittlement requirements - meets current Canadian standard requirements for timber construction, giving builders and engineers documented assurance of performance
- 0.315 in. shank diameter with 13 in. thread length - delivers deep thread penetration across timber members for strong, lasting connections in multi-ply and heavy timber assemblies
Why This Product
- Purpose-built for CLT and mass timber - the SDCF TIMBER-CF screw is specifically designed for cross-laminated timber and mass timber construction, making it a direct fit for modern engineered wood projects where standard fasteners may fall short of structural requirements
- Eliminates predrilling in most applications - the SawTooth point reduces installation torque and allows direct driving into most wood members, cutting labor time without sacrificing holding strength
- Flat head with nibs for a countersunk flush finish - the screw seats cleanly below the surface without additional tools, keeping timber surfaces smooth for exposed architectural applications and surface spline connections
- Versatile across a wide range of structural tasks - approved for wood-to-wood, wood-to-steel, stud-to-plate, floor-to-floor, wall-to-wall, butt joist, and Simpson Strong-Tie connector fastening, making it a go-to choice for timber framers and structural contractors across multiple phases of a project
Specifications
- Brand: Simpson Strong-Tie
- Product Name: Strong-Drive SDCF TIMBER-CF Screw
- Length: 13-3/4 in.
- Shank Diameter: 0.315 in.
- Head Diameter: 0.875 in.
- Thread Length: 13 in.
- Head Type: Flat Head with Nibs
- Drive Type: T50 6-Lobe
- Point Type: SawTooth Point
- Coating: E-coat Electrocoating
- Finish: E-coat Electrocoating
- Color: Black
Available Pack Options
- SDCF12X350-R25: 25 Pk - includes T50, 6-lobe driver bit (replacement bit: BIT50T-2-R1)
- SDCF12X350: 100 Pk - includes T50, 6-lobe driver bit (replacement bit: BIT50T-2-R1)
Approved Applications
- Fastening Wood-to-Wood
- General Interior
- Fastening Support Beams
- Heavy Timber
- Mass Timber / Cross-Laminated Timber
- Engineered Wood - Multi-Ply Fastening
- Fastening Simpson Strong-Tie Connectors
- Engineered Wood
- Fastening Wood-to-Steel
- Timber Framing
- Surface Splines
- Beam Reinforcement
- Fastening Wall-to-Wall
- Glulam
- Fastening Butt Joists
- Fastening Floor-to-Floor
- Fastening Stud-to-Plate
What's Included
- T50, 6-lobe driver bit (replacement bit: BIT50T-2-R1)
Reviews
FAQs
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Most of our products will ship within 1 to 3 Business Days. Some Special order products will ship within 2 to 5 Business Days. Preorders will be shipped to you on a first come first serve basis as soon as available from the manufacturer. Items that are "Made-to-Order" (Custom order products) will be shipped when fabrication is completed, shipping and delivery times will vary and depend on manufacturing.
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