Product Description
Simpson Strong-Drive SDCF TIMBER-CF Screw - 0.315 in. x 7 in., T40, E-Coat by Simpson Strong-Tie is a structural wood screw engineered for cross-laminated timber (CLT), mass timber construction, and demanding general interior fastening applications. The black e-coat finish and optimized hardness profile combine aesthetics with reliable, long-term performance, making this screw a dependable choice for heavy timber framing, glulam assemblies, engineered wood fastening, and multi-ply wood-to-wood connections.
Key Features
- Flat head with underhead nibs enables clean countersinking for a flush finish - eliminates surface protrusions that interfere with adjoining materials
- Heavy-duty, fully-threaded shank provides strength with superb withdrawal resistance - delivers structural holding power in wood-to-wood and wood-to-steel connections
- SawTooth point for fast starts and easy driving - reduces installation torque and eliminates the need for predrilling in most applications
- Black e-coat electrocoating finish provides a construction-durable nonmetallic coating - resists corrosion in interior dry-service applications while enhancing appearance
- Deep T40 6-lobe recess for a secure drive - minimizes cam-out and bit slippage during installation for faster, cleaner driving
- Optimized hardness profile helps mitigate risk of brittle fracture - supports reliable, long-term structural performance in demanding timber applications
- Compliant with CSA O86:24 hydrogen embrittlement requirements - meets rigorous Canadian structural standards for mass timber and engineered wood construction
- 0.230 in. shank diameter with 6 5/8 in. thread length - maximizes thread engagement throughout the fastening zone for superior grip
Why This Product
- Designed specifically for cross-laminated timber and mass timber construction - the SDCF Timber-CF screw provides uncompromised structural strength for the unique demands of CLT, glulam, beam reinforcement, and heavy timber framing applications where standard screws fall short.
- The SawTooth point eliminates predrilling in most applications - reducing labor time and tool requirements on job sites where speed and efficiency in engineered wood fastening are critical.
- The black e-coat electrocoating finish is a nonmetallic, construction-durable coating - making it the right choice for interior dry-service applications where corrosion resistance and a clean finished appearance both matter.
- Compliant with CSA O86:24 hydrogen embrittlement requirements - giving engineers, contractors, and inspectors confidence that this screw meets the structural reliability standards expected in mass timber and engineered wood projects.
Specifications
- Brand: Simpson Strong-Tie
- Product Name: Strong-Drive SDCF TIMBER-CF Screw
- Length: 7 in.
- Shank Diameter: 0.230 in.
- Head Diameter: 0.590 in.
- Thread Length: 6 5/8 in.
- Head Type: Flat Head with Nibs
- Drive Type: T40 6-Lobe
- Point Type: SawTooth Point
- Coating: E-coat Electrocoating
- Finish: E-coat Electrocoating
- Color: Black
Available Pack Options
- SDCF8X180-R50: 50 Pk - includes T40, 6-lobe driver bit (replacement bit: BIT40T-134-R2)
- SDCF8X180: 250 Pk - includes T40, 6-lobe driver bit (replacement bit: BIT40T-134-R2)
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
- T40, 6-lobe driver bit (replacement bit: BIT40T-134-R2)
Reviews
FAQs
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