#7 1-5/8" Simpson Strong-Tie T15 Trim Head Deck Screw - 316 Stainless Steel, Tan 03, Pkg. 70 Hidden Deck Fastener Systems This anchor requires a 7/8"

This anchor requires a 7/8" hole that is 12" deep

6) SP58-58 anchor

the DWP drives smoothly into wood

Daggerz Self-Drilling Metal Screws with Phillips flat heads are designed for efficient fastening in light-gauge steel and sheet metal

#7 1-5/8" Simpson Strong-Tie T15 Trim Head Deck Screw - 316 Stainless Steel, Tan 03, Pkg. 70 Hidden Deck Fastener Systems This anchor requires a 7/8"The 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.