The Strong-Drive SWD Double-Threaded Screw is a high-performance structural fastener engineered for exterior wood-to-wood applications, including deck ledgers and general framing. Double thread design and unthreaded mid-shank, this screw delivers consistent clamping force while minimizing wood splitting and over-driving.

Crafted for demanding environments, it features a corrosion-resistant double-barrier coating, ensuring long-term durability even in outdoor exposure. The low-profile head provides a clean, flush finish.

Key Features:

• Double-Threaded: Grips both members of the wood connection for superior withdrawal resistance.
• Unthreaded Mid-Shank: Allows wood members to draw tightly together, creating a stronger joint and reducing friction during driving.
• Black Double-Barrier Coating: Built to withstand harsh outdoor environments.
• Flush Head Design: Sits cleanly against the surface to reduce snagging and create a sleek finish.
• Precision Engineered: Delivers consistent performance across multiple wood species and densities.

Applications:

• Deck ledger attachments to rim joists
• General exterior wood framing
• Pergolas, porches, and outdoor structural assemblies
• Wood-to-wood connections where high withdrawal strength is required

Installation:

• No pre-drilling required in most applications, thanks to its screw chisel point
• Use with a standard driver or impact driver
• For best results, drive the screw until the head is flush with the wood surface—avoid overdriving
• Can be used with treated lumber, following coating compatibility guidelines

California Residents: WARNING