Simpson 15 1/8 in Heavy Holdown w/SDS2.5 Screws Stainless HHDQ11SS-SDS2.5 TB WOOD-TO-STEEL Screw (Collated) For seaside or marine environments

For seaside or marine environments with direct saltwater exposure

and is especially suited for applications where chlorides are present - such as coastal decks

Frame Construction: Electro-welded steel plate

1/4 is designed for joist-to-header installation in wood-framed construction

Electro-welded steel plate construction

Simpson 15 1/8 in Heavy Holdown w/SDS2.5 Screws Stainless HHDQ11SS-SDS2.5 TB WOOD-TO-STEEL Screw (Collated) For seaside or marine environmentsThe Simpson Strong Tie HHDQ11SS SDS2. 5 is a 15 1 8 inch stainless steel heavy holdown engineered for extra high load applications where strength, corrosion resistance, and installation efficiency are critical. Constructed from 7 gauge steel with a stainless steel finish, this holdown installs directly on the sill plate and is purpose built to handle demanding structural connections with minimal fastener slip. Supplied complete with Strong Drive SDS