Simpson Strong-Tie’s new fastener

Simpson Strong-Tie is extending its line of structural fasteners with the launch of the Strong-Drive SWD Double-Threaded screw. With its innovative design, the SWD wood-to-wood screw can replace some interior and exterior connectors, potentially reducing installation times and labor costs, the company said.

Designed for stealth, strength and speed, the SWD Double-Threaded screw is a low-profile structural screw with a compact, cap-style head to reduce its visibility. The screw’s unique double-thread design with differentiated thread geometries and smooth mid-shank holds wood members together tightly. It features a black exterior double-barrier coating for corrosion resistance and a chisel tip for fast starts, easy driving at any angle and reduced splitting.

The new screw is suitable for applications including beam-to-post, beam-to-joist, purlin-to-truss, guardrail-to-post and roof-to-wall connections; multi-ply assemblies; knee bracing; cap connector replacements; and post-frame connections.

“The Strong-Drive SWD Double-Threaded screw simplifies installation and provides greater performance at a lower installation cost than existing solutions,” said Eric Philip, product manager of Fastening Systems for Simpson Strong-Tie. “It’s ideal for a range of interior and exterior, wood-to-wood, engineered wood or preservative-treated wood connections in which the installer wants a low-profile structural fastening solution.”

Code-approved, the SWD Double-Threaded screw is available in various lengths, from 2 1/2" to 10 3/4".