#7 x 1" Simpson Strong-Tie DWP T15 Trim Head Wood Screw - 305 Stainless Steel, Pkg. 5,000 CJT Concealed Joist Ties #8 sizes have buttress threads

#8 sizes have buttress threads and new dog-eared point to improve drilling through sheathing and metal

Sharp Tapping Tip: Effortlessly penetrates steel surfaces without the need for pre-drilling

EPDM Washer: Forms a watertight seal to protect against moisture and rust

Simpson 316 stainless steel paper ring shank coil siding nails can be used for a variety of applications

Load-Rated: Engineered for structural strength and outdoor durability

#7 x 1" Simpson Strong-Tie DWP T15 Trim Head Wood Screw - 305 Stainless Steel, Pkg. 5,000 CJT Concealed Joist Ties #8 sizes have buttress threadsThe Simpson Strong Tie Deck Drive DWP Trim Head Wood SS Screw is designed for outdoor builds that need strength and long term durability. Made from 305 stainless steel, it offers excellent corrosion resistance for decks, docks, and exterior structures. With its sharp point and efficient thread design, the DWP drives smoothly into wood, engineered wood, and polymer materials while reducing strain on your tools. Available in both hand drive and collated