Silicon Bronze Wood Screws
These Silicon Bronze screws have cut threads and the full-bodied diameter shank desired by boatbuilders. Unlike rolled thread screws with their reduced shank--these screws have a shank diameter that is the same size as the outside of the threads. This completely fills the clearance hole normally drilled for the shank thus creating a waterproof seal. These wood screws have a square drive recess to help prevent cam out.