For treated lumber and exterior projects
designed to accept standard 3/8" threaded rod directly
code-compliant connection where angled joists meet beams
Decks & Outdoor Structures (in covered
300" or 8 mm-headed fasteners or 1/4"-20 threaded studs
#8 x 1-5/8" Simpson Strong-Tie DWP T20 Flat Head Wood Screw - 305 Stainless Steel, Pkg. 4,000 Fiber-Cement Siding Nails For treated lumber and exteriorSimpson Strong Tie DWP Flat Head Screws are built for strength, reliability, and clean finishes in decking, trim, and general exterior wood applications. Made from 305 stainless steel for maximum dependable outdoor corrosion resistance, these screws perform in harsh environments and with treated lumber. The flat head design allows the screw to countersink for a flush fit, providing a smooth, professional look. With a Type 17 point, installation is