Product Description
Simpson Strong-Drive SDCP TIMBER-CP Screw - 8 mm x 220 mm, Black E-Coat by Simpson Strong-Tie is a structural timber fastener engineered for cross-laminated timber (CLT), mass timber construction, and general interior wood framing applications. This partially threaded screw pulls structural members together with exceptional holding power, delivering a clean, flush countersink finish thanks to its flat head with underhead nibs. The black e-coat electrocoating finish reduces drive friction, supports use with fire-retardant-treated (FRT) lumber, and meets ICC-ES AC257 Exposure Condition 3 standards - making it a dependable choice for interior and dry-service structural connections including engineered wood, timber framing, and factory-built or modular construction.
Key Features
- Black e-coat electrocoating finish - provides a nonmetallic, friction-reducing surface approved for FRT lumber and corrosion resistance under ICC-ES AC257 Exposure Condition 3, extending service life in interior structural applications
- Optimized hardness profile compliant with CSA O86:24 - mitigates external hydrogen embrittlement risk, improving long-term structural reliability in mass timber and CLT assemblies
- Flat head with underhead nibs - enables clean countersinking flush with the wood surface for a professional finish without additional prep work
- Deep T40, 6-lobe recess drive - delivers a secure, cam-out-resistant drive engagement so the fastener seats accurately even under high torque demands (driver bit included)
- Heavy-duty shank with shank knurl - provides strength, durability, and reduced torque during installation, lessening wear on the installer and the drive bit
- Type-17 point - ensures fast starts and reduced installation torque, eliminating the need for predrilling in most wood framing and timber construction applications
- Partial thread configuration - pulls structural members tightly together for superior clamping force and load capacity in wood-to-wood connections
- Low-friction coating - allows driving with less torque compared to uncoated fasteners, reducing installation effort and tool wear
Why This Product
- Purpose-built for mass timber and CLT construction - the SDCP screw's partial thread, heavy-duty shank, and CSA O86:24-compliant hardness profile make it a structurally verified choice for engineered wood and cross-laminated timber assemblies where fastener performance is critical.
- Eliminates predrilling in most applications - the Type-17 point and low-friction e-coat finish significantly reduce installation time and labor on timber framing, general framing, and modular construction jobsites.
- Approved for FRT lumber and Exposure Condition 3 - the black e-coat electrocoating meets ICC-ES AC257 requirements, so these screws are compatible with fire-retardant-treated lumber used in many interior commercial and residential structural applications.
- Reduces brittleness risk in structural fastening - the optimized hardness profile directly addresses hydrogen embrittlement concerns that can compromise structural integrity, providing added confidence in long-term wood-to-wood load capacity.
Specifications
- Brand: Simpson Strong-Tie
- Product Name: Strong-Drive SDCP TIMBER-CP Screw
- Size: 8 mm x 220 mm
- Length: 8 5/8 in.
- Thread Length: 3 1/8 in.
- Shank Diameter: 0.225 in.
- Head Diameter: 0.575 in.
- Head Type: Flat Head with Nibs
- Drive Type: T40 6-Lobe
- Point Type: Type-17 Point
- Coating: E-coat Electrocoating
- Finish: E-coat Electrocoating
- Color: Black
Available Pack Options
- SDCP8X220-R50: 50 Pk - includes T40, 6-lobe drive bit (replacement bit: BIT40T-134-R2)
- SDCP8X220: 250 Pk - includes T40, 6-lobe drive bit (replacement bit: BIT40T-134-R2)
Approved Applications
- Engineered Wood
- Fastening Wood-to-Wood
- Factory-Built/Modular Construction
- Timber Framing
- General Framing
- Framing - Wood
- Post Frame
- Mass Timber / Cross-Laminated Timber
- Fastening Floor-to-Floor
- Engineered Wood - Multi-Ply Fastening
- Structural Composite Lumber
- Wood / Residential Construction
What's Included
- Includes T40, 6-lobe drive bit (replacement bit: BIT40T-134-R2)
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FAQs
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