#7 x 2-1/4" Simpson Strong-Tie T15 Trim Head Deck Screw - 316 Stainless Steel, Gray, Pkg. 1,750 CS/CSHP/CMST Coiled Straps The Strong-Tie HUC46Z concealed flange

The Strong-Tie HUC46Z concealed flange hanger features a G185 ZMAX galvanized finish for added corrosion resistance and requires the use of hot-dip galvanized fasteners which meet the specifications of ASTM A153

They're also fully removable

Bugle head design - provides flush countersinking for a clean

The Simpson CCQ66SS-SDS2

#7 x 2-1/4" Simpson Strong-Tie T15 Trim Head Deck Screw - 316 Stainless Steel, Gray, Pkg. 1,750 CS/CSHP/CMST Coiled Straps The Strong-Tie HUC46Z concealed flangeThe Simpson Strong Tie Trim Head Decking Screw is designed for PVC and composite decking projects where corrosion resistance and appearance matter most. Made from 316 stainless steel for lasting durability, these screws perform reliably in marine or high exposure environments. Painted head options in 13 colors are matched to leading decking brands for a seamless, concealed finish. For a full reference, see the Composite Decking Color Matching Guide.