Product Description
Simpson Strong-Drive SDCF TIMBER-CF Screw - 0.390 in. x 14 in., T50, E-Coat by Simpson Strong-Tie is a heavy-duty structural screw engineered for cross-laminated timber (CLT), mass timber construction, and demanding general interior wood fastening applications. Redesigned for performance and reliability, this large-diameter timber screw features a fully threaded shank, a flat countersinking head, and a SawTooth point that makes it suitable for wood-to-wood, wood-to-steel, glulam, engineered wood, and multi-ply fastening projects where uncompromised holding strength is essential.
Key Features
- Flat head with underhead nibs enables clean countersinking for a flush, professional finish - ideal for exposed mass timber and CLT surfaces where aesthetics matter
- Heavy-duty, fully-threaded shank along 13 3/4 in. of thread length provides maximum withdrawal resistance - delivers superior holding power in structural timber connections
- SawTooth point ensures fast starts and low installation torque - eliminates the need for predrilling in most applications, speeding up workflow on the job site
- Black e-coat electrocoating finish provides a construction-durable nonmetallic coating for corrosion resistance in interior dry-service applications - protects the fastener while maintaining a clean black appearance
- Deep T50 6-lobe recess engages the driver bit securely - reduces cam-out and provides confident, controlled driving even in dense timber materials
- Compliant with CSA O86:24 hydrogen embrittlement requirements - meets recognized structural standards for reliability and long-term performance in mass timber construction
- Optimized hardness profile helps mitigate risk of brittle fracture - adds a layer of safety and durability in demanding structural applications
- 0.390 in. outer diameter with a 0.290 in. shank diameter - sized specifically for heavy timber, glulam, engineered wood, and multi-ply fastening where a robust connection is required
Why This Product
- Built specifically for cross-laminated timber and mass timber construction - the large flat head with nibs, fully threaded shank, and structural-grade hardness profile make this screw a purpose-built solution for CLT and heavy timber projects rather than a general-purpose substitute
- No predrilling required in most applications - the SawTooth point bites into timber quickly and reduces installation torque, which saves significant time when driving large-diameter screws into dense engineered wood or glulam members
- Black e-coat electrocoating provides a durable nonmetallic finish that resists corrosion in interior dry-service conditions - the coating also enhances the appearance of the fastener in visible timber applications where finish quality is important
- CSA O86:24 compliance and optimized hardness profile address hydrogen embrittlement concerns - giving contractors and engineers confidence in the long-term structural integrity of the connection
Specifications
- Brand: Simpson Strong-Tie
- Product Name: Strong-Drive SDCF TIMBER-CF Screw
- Length: 14 in.
- Thread Length: 13 3/4 in.
- Shank Diameter: 0.290 in.
- Head Diameter: 0.725 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
- SDCF10X360-R25: 25 Pk - includes T50, 6-lobe driver bit (replacement bit: BIT50T-2-R1)
- SDCF10X360: 150 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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