Product Description
Simpson Strong-Drive SDCF TIMBER-CF Screw - 0.470 in. x 7 7/8 in., T50, E-Coat by Simpson Strong-Tie is a heavy-duty structural wood screw engineered for cross-laminated timber (CLT), mass timber construction, and general interior wood fastening applications. The redesigned SDCF screw delivers uncompromised holding power in demanding timber framing, glulam assembly, and engineered wood connections - all with a clean, flush finish and reliable long-term performance backed by a construction-durable black e-coat electrocoating.
Key Features
- Flat head with underhead nibs enables clean countersinking for a flush finish - ideal for exposed CLT and mass timber surfaces where aesthetics matter
- Heavy-duty, fully-threaded shank provides exceptional withdrawal resistance - keeping timber connections tight under load in structural applications
- SawTooth point enables fast starts and easy driving - significantly reducing installation torque and eliminating the need for predrilling in most applications
- Black e-coat electrocoating provides a construction-durable nonmetallic coating - delivering corrosion resistance suited for interior dry-service environments while enhancing aesthetics
- Deep T50 6-lobe drive recess provides a secure driver engagement - reducing cam-out and improving installation control during heavy timber assembly
- Compliant with CSA O86:24 hydrogen embrittlement requirements - the optimized hardness profile helps mitigate risk of brittle fracture for reliable, long-term structural performance
- Length of 7 7/8 in. (200 mm) - provides deep thread engagement through thick timber members including multi-ply engineered wood and glulam beams
- Shank diameter of 0.315 in. with 0.470 in. head diameter - engineered proportions deliver the clamping force needed for surface splines, beam reinforcement, and stud-to-plate connections
Why This Product
- Purpose-built for CLT and mass timber - this screw is specifically designed for cross-laminated timber and mass timber construction, where standard fasteners often fall short in withdrawal performance and surface finish quality
- No predrilling required in most applications - the SawTooth point and optimized thread geometry reduce installation time and labor cost on large-scale timber framing and engineered wood projects
- Structurally reliable in interior conditions - the black e-coat electrocoating and CSA O86:24-compliant hardness profile work together to reduce brittleness risk and maintain performance over time in dry-service interior environments
- Versatile across a wide range of timber applications - from fastening wood-to-wood and wood-to-steel to glulam, butt joists, wall-to-wall, and Simpson Strong-Tie connector installations, this single fastener handles demanding multi-application job sites
Specifications
- Brand: Simpson Strong-Tie
- Product Name: Strong-Drive SDCF TIMBER-CF Screw
- Length: 7 7/8 in. (200 mm)
- Shank Diameter: 0.315 in.
- Head Diameter: 0.875 in.
- Thread Length: 7 in.
- Drive Type: T50 6-Lobe
- Head Type: Flat Head with Nibs
- Point Type: SawTooth Point
- Coating: E-coat Electrocoating
- Finish: E-coat Electrocoating
- Color: Black
Available Pack Options
- SDCF12X200-R25: 25 Pk - includes T50, 6-lobe driver bit (replacement bit: BIT50T-2-R1)
- SDCF12X200: 200 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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