Product Description
Simpson Strong-Drive SDCFC TIMBER-CFC Screw - 0.315 in. x 22-7/8 in., T40, E-Coat by Simpson Strong-Tie is a heavy-duty structural wood screw engineered for demanding large-member applications including mass timber, glulam, and heavy timber framing. The fully threaded shank delivers superior withdrawal resistance across the entire fastener length, while the compact cylinder head creates a clean, finished appearance whether left exposed or countersunk flush. The SawTooth point reduces installation torque and eliminates the need for predrilling in most applications, making this screw a practical choice for structural timber connections, beam reinforcement, engineered wood fastening, and cross-laminated timber assemblies. The black e-coat electrocoating finish enhances aesthetics and helps mitigate the risk of brittle fracture for reliable, long-term performance in interior dry-service conditions.
Key Features
- Compact cylinder head - helps countersink the screw for a clean, professional finish whether left exposed or concealed
- Heavy-duty, fully threaded shank with a 21-7/8 in. thread length - provides strength and superb withdrawal resistance along the full fastener length
- SawTooth point - enables fast starts and easy driving, reducing installation torque and eliminating the need for predrilling in most applications
- Black e-coat electrocoating finish - delivers a construction-durable nonmetallic coating for corrosion resistance in interior dry-service applications while enhancing aesthetics
- Deep T40 6-lobe recess drive - provides a secure, slip-resistant interface that reduces cam-out during installation
- Optimized hardness profile - helps mitigate the risk of brittle fracture for dependable, long-term structural performance
- Compliant with CSA O86:24 hydrogen embrittlement requirements - meets current standards for structural wood fasteners in engineered applications
- Shank diameter of 0.230 in. with a 0.315 in. nominal overall diameter - sized for demanding structural connections in large timber members
Why This Product
- Designed specifically for mass timber, glulam, and heavy timber applications - the 22-7/8 in. length and fully threaded shank provide the reach and withdrawal strength needed for large structural members that shorter screws cannot adequately fasten.
- No predrilling required in most applications - the SawTooth point reduces installation time and labor costs on job sites where heavy timber fastening would otherwise demand time-consuming prep work.
- The black e-coat finish serves a dual purpose - it improves corrosion resistance for interior dry-service use and delivers a clean, finished appearance that works in exposed architectural timber applications.
- Compliant with CSA O86:24 hydrogen embrittlement requirements - builders and engineers working on projects that reference current Canadian wood design standards can specify this fastener with confidence.
Specifications
- Brand: Simpson Strong-Tie
- Product Name: Strong-Drive SDCFC TIMBER-CFC Screw
- Length: 22-7/8 in.
- Shank Diameter: 0.230 in.
- Head Diameter: 0.400 in.
- Thread Length: 21-7/8 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
- SDCFC8X580-R25: 25 Pk - includes T40, 6-lobe driver bit (replacement bit: BIT40T-134-R2)
- SDCFC8X580: 100 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)
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FAQs
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