Product Description
Simpson Strong-Drive SDCF TIMBER-CF Screw - 0.390 in. x 11 in., T50, E-Coat by Simpson Strong-Tie is a structural timber screw engineered for cross-laminated timber (CLT), mass timber construction, and demanding general interior wood fastening applications. Redesigned for uncompromised strength and consistent performance, this heavy-duty fastener delivers superb withdrawal resistance while the black e-coat electrocoating finish keeps the connection clean and corrosion resistant in interior dry-service conditions. Whether you are fastening support beams, glulam assemblies, engineered wood, or wall-to-wall connections, this screw is built to perform reliably over the long term.
Key Features
- Flat head with underhead nibs enables clean countersinking and a flush finish - meaning no raised fastener heads to interfere with surface splines or finished timber surfaces
- Heavy-duty, fully-threaded shank along a 10 1/2 in. thread length - maximizes withdrawal resistance across the entire fastener length for structural-grade holding power
- SawTooth point for fast starts and easy driving - reduces installation torque and eliminates the need for predrilling in most applications, speeding up workflow on the jobsite
- Black e-coat electrocoating finish - provides a construction-durable nonmetallic coating for corrosion resistance in interior dry-service applications while delivering a clean, professional appearance
- Deep T50 6-lobe recess - gives a secure, high-torque drive connection that reduces cam-out and driver bit wear during heavy timber installation
- Compliant with CSA O86:24 hydrogen embrittlement requirements - the optimized hardness profile helps mitigate the risk of brittle fracture for reliable, long-term structural performance
- 0.390 in. head diameter of 0.725 in. - provides a large bearing surface for secure seating in CLT and mass timber panels without over-stressing the wood surface
- 0.290 in. shank diameter - sized for structural load transfer in heavy timber and multi-ply engineered wood fastening applications
Why This Product
- Purpose-built for mass timber and CLT construction - the SDCF TIMBER-CF screw is specifically designed for cross-laminated timber, glulam, and multi-ply engineered wood fastening where structural integrity and consistent installation are critical
- No predrilling required in most applications - the SawTooth point and reduced-torque design save significant time on large-scale timber framing and beam reinforcement projects
- Optimized hardness profile reduces brittle fracture risk - combined with CSA O86:24 compliance, this screw is engineered to meet the demanding structural and safety standards of modern mass timber construction
- Versatile enough for a wide range of structural connections - from fastening wood-to-wood and wood-to-steel to surface splines, butt joists, and Simpson Strong-Tie connector installations, this screw handles diverse interior structural tasks with a single fastener specification
Specifications
- Brand: Simpson Strong-Tie
- Product Name: Strong-Drive SDCF TIMBER-CF Screw
- Length: 11 in.
- Shank Diameter: 0.290 in.
- Head Diameter: 0.725 in.
- Thread Length: 10 1/2 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
- SDCF10X280-R30: 30 Pk - includes T50, 6-lobe driver bit (replacement bit: BIT50T-2-R1)
- SDCF10X280: 150 Pk - includes T50, 6-lobe driver bit (replacement bit: BIT50T-2-R1)
Approved Applications
- Mass Timber / Cross-Laminated Timber (CLT)
- Heavy Timber construction
- Timber Framing
- Glulam beam fastening
- Engineered Wood - Multi-Ply Fastening
- Engineered Wood (general)
- Beam Reinforcement
- Surface Splines
- Fastening Wood-to-Wood
- Fastening Wood-to-Steel
- Fastening Support Beams
- Fastening Simpson Strong-Tie Connectors
- Fastening Wall-to-Wall
- Fastening Floor-to-Floor
- Fastening Butt Joists
- Fastening Stud-to-Plate
- General Interior applications
What's Included
- T50, 6-lobe driver bit (replacement bit: BIT50T-2-R1)
Reviews
FAQs
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