Product Description
Simpson Strong-Drive SDCF TIMBER-CF Screw - 0.315 in. x 10 1/4 in. T40, E-Coat by Simpson Strong-Tie is a heavy-duty structural fastener engineered for cross-laminated timber (CLT), mass timber construction, and demanding general interior wood applications. The redesigned SDCF Timber-CF screw combines a fully threaded shank, a self-starting SawTooth point, and a sleek black e-coat finish to deliver reliable, long-term performance in timber framing, glulam assembly, beam reinforcement, and engineered wood fastening. Whether you are connecting support beams, fastening wall-to-wall assemblies, or anchoring stud-to-plate connections, this screw offers the strength and ease of installation that structural work requires.
Key Features
- Flat head with underhead nibs - enables clean countersinking for a flush, professional finish without additional prep work
- Heavy-duty, fully threaded shank with 9 3/4 in. thread length - maximizes withdrawal resistance and grip strength throughout the fastener's full engagement depth
- SawTooth point - starts fast and drives easily, reducing installation torque and eliminating the need for predrilling in most applications
- Black e-coat electrocoating finish - provides a construction-durable nonmetallic coating for corrosion resistance in interior dry-service applications while enhancing aesthetics
- Optimized hardness profile - works alongside the e-coat finish to help mitigate risk of brittle fracture for reliable, long-term structural performance
- Deep T40 6-lobe recess drive - delivers a secure, slip-resistant engagement with the driver bit, reducing cam-out during installation
- Compliant with CSA O86:24 hydrogen embrittlement requirements - meets rigorous standards for structural reliability in mass timber applications
- 0.315 in. head diameter of 0.590 in. and 0.230 in. shank diameter - sized appropriately for demanding timber connections without over-boring the substrate
Why This Product
- Designed specifically for cross-laminated timber and mass timber construction - the SDCF Timber-CF addresses the unique structural demands of CLT, glulam, and engineered wood fastening where conventional screws may underperform
- No predrilling required in most applications - the SawTooth point reduces setup time and labor, making it a practical choice for high-volume timber framing and interior wood assembly work
- The black e-coat electrocoating finish is both functional and aesthetic - it resists corrosion in interior dry-service conditions while delivering a clean, consistent appearance suited to exposed timber applications
- Compliant with CSA O86:24 hydrogen embrittlement requirements - builders and engineers can specify this fastener with confidence in projects requiring documented structural compliance
Specifications
- Brand: Simpson Strong-Tie
- Product Name: Strong-Drive SDCF TIMBER-CF Screw
- Length: 10 1/4 in.
- Shank Diameter: 0.230 in.
- Head Diameter: 0.590 in.
- Thread Length: 9 3/4 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
- SDCF8X260-R50: 50 Pk - includes T40, 6-lobe driver bit (replacement bit: BIT40T-134-R2)
- SDCF8X260: 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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