Product Description
Simpson Strong-Drive SDCFC TIMBER-CFC Screw - 0.315 in. x 7-7/8 in., T40, E-Coat by Simpson Strong-Tie is a heavy-duty structural fastener engineered for demanding timber construction and mass timber applications. The redesigned SDCFC Timber-CFC screw combines a fully threaded shank for maximum withdrawal resistance with a compact cylinder head that delivers a clean, professional finish whether left exposed or countersunk. The SawTooth point enables fast starts and easy driving, while the black e-coat electrocoating finish enhances aesthetics and provides reliable corrosion resistance in interior dry-service conditions - making this screw a dependable choice for fastening large wood members, glulam beams, engineered wood assemblies, and cross-laminated timber structures.
Key Features
- Compact cylinder head design - helps countersink the screw flush or below the surface for a clean, professional finish on exposed or concealed fastening applications
- Heavy-duty, fully threaded shank (0.230 in. shank diameter) - delivers superb withdrawal resistance along the full 7-7/8 in. length, providing structural strength in large timber and engineered wood members
- SawTooth point - enables fast starts and easy driving while reducing installation torque, eliminating the need for predrilling in most applications and saving significant labor time
- Black e-coat electrocoating finish - provides a construction-durable, nonmetallic coating with corrosion resistance suited for interior dry-service applications, while keeping the fastener visually clean and unobtrusive
- Deep T40 6-lobe drive recess - creates a secure, slip-resistant engagement with the driver bit, reducing cam-out and ensuring consistent torque transfer during installation
- Fully threaded shank with 7-1/2 in. thread length - maximizes holding power through the entire connection, ideal for multi-ply fastening and structural beam reinforcement
- Compliant with CSA O86:24 hydrogen embrittlement requirements - the optimized hardness profile and e-coat finish together mitigate the risk of brittle fracture for reliable, long-term structural performance
Why This Product
- Engineered for mass timber and heavy structural assemblies - the robust 0.315 in. diameter and full 7-7/8 in. length make this screw purpose-built for fastening large members including glulam, cross-laminated timber, and engineered wood where standard screws fall short
- Eliminates predrilling in most applications - the SawTooth point reduces installation torque and starts easily in dense wood, cutting labor time and simplifying on-site workflow for timber framing and beam reinforcement projects
- Cleaner finish with no compromise on strength - the cylinder head profile allows for countersinking without sacrificing the full withdrawal resistance delivered by the heavy-duty, fully threaded shank, giving installers both aesthetics and structural integrity in one fastener
- Meets stringent Canadian structural standards - compliance with CSA O86:24 hydrogen embrittlement requirements, combined with the e-coat finish and optimized hardness profile, provides confidence in long-term performance for projects requiring documented structural reliability
Specifications
- Brand: Simpson Strong-Tie
- Product Name: Strong-Drive SDCFC TIMBER-CFC Screw
- Length: 7-7/8 in.
- Shank Diameter: 0.230 in.
- Head Diameter: 0.400 in.
- Thread Length: 7-1/2 in.
- Drive Type: T40 6-Lobe
- Head Type: Cylinder Head
- Point Type: SawTooth Point
- Coating: E-coat Electrocoating
- Finish: E-coat Electrocoating
- Color: Black
Available Pack Options
- SDCFC8X200-R50: 50 Pk - includes T40, 6-lobe driver bit (replacement bit: BIT40T-134-R2)
- SDCFC8X200: 250 Pk - includes T40, 6-lobe driver bit (replacement bit: BIT40T-134-R2)
Approved Applications
- Engineered Wood
- Fastening Wood-to-Wood
- Timber Framing
- Beam Reinforcement
- Fastening Wall-to-Wall
- Fastening Support Beams
- Heavy Timber
- Glulam
- Fastening Butt Joists
- Mass Timber / Cross-Laminated Timber
- Engineered Wood - Multi-Ply Fastening
- Fastening Simpson Strong-Tie Connectors
What's Included
- T40, 6-lobe driver bit (replacement bit: BIT40T-134-R2)
Reviews
FAQs
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