#7 x 2-1/4" Simpson Strong-Tie T15 Trim Head Deck Screw - 316 Stainless Steel, Black, Pkg. 20 Box Nail — Annular Ring Shank This clamp and rail system

This clamp and rail system is designed to provide excellent holding strength

This product is intended for use with Rough Cut 4x posts or columns but can accommodate several post sizes for both nominal and rough cut lumber

or offset top flange configurations for flexibility in design

drives quickly and smoothly into wood to save time

#7 x 2-1/4" Simpson Strong-Tie T15 Trim Head Deck Screw - 316 Stainless Steel, Black, Pkg. 20 Box Nail — Annular Ring Shank This clamp and rail systemThe 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.