Simpson #12 x 4-1/2" Strong-Drive DWP WOOD Screw Flat Head, 305 Stainless Steel Bender Dies 725" head diameter) - the

725" head diameter) - the nibs pull the head cleanly into the wood surface during driving

Type 316 stainless steel provides superior corrosion resistance and is the preferred choice for seaside or coastal environments where salt air and moisture exposure are more intense

You can use any standard 1/4 in

They are also compatible with most round head wire coil siding nailers

Simpson #12 x 4-1/2" Strong-Drive DWP WOOD Screw Flat Head, 305 Stainless Steel Bender Dies 725" head diameter) - theThe Simpson Strong Drive DWP Wood Screw in #12 x 4 1 2" with a Flat Head is a load rated structural fastener engineered for demanding exterior applications including decks, docks, boardwalks, and anywhere prolonged exposure to moisture or severe corrosion is a concern. Built from Type 305 Stainless Steel, this heavy duty wood screw delivers the corrosion resistance needed for structural connections near water while meeting ICC ES acceptance criteria