#14 X 4" Marine Grade Type 316 Stainless Steel Deck Screw Square Drive, Bugle Head (Quantity: 500) Type 17 Wood Cutting Point, 2-3/4" of Thread Length, 14 Screw Diameter, 4" Screw Length

316 stainless steel is ideal where superior corrosion resistance is required. You'll be amazed at the difference an auger point makes on a Stainless Steel screw! Great for use with pressure treated wood, or premium materials like Redwood and Western Red Cedar because they are truly self-drilling. Wood screws are designed to attach two pieces of wood together. They generally feature a smooth, unthreaded shank below the head which ensures a tight attachment, and the threaded portion of the shank is tapered to increase the holding power. Threads specially designed for use in wood effectively resist pulling out. Square drive decking screws are screws that you can use to fasten wood and composite decks to main beams. These stainless-steel square head decking screws resist corrosion, so they are a perfect fastener for outdoor decks, since they can withstand a variety of exterior stresses and weather conditions. Length is measured from the top of the head. Square-shaped drive systems are driven with a wrench. Square drive style helps eliminate stripping effect. Lay flat with the surface they are installed in. The square drive helps eliminate stripping, which can be a problem when applying pressure to the screw with other types of drives. The type-17 point allows you to start fast and get the screw into the wood cleanly and easily, with coarse threads about 2/3 of the way up the shank to draw the decking into a tight seal with the substrate. Newport Fasteners’ square drive decking screws are versatile enough that you can use them for all types of wood decking, including preservative-treated woods. You will usually need about 350 to fasten 100 square feet of decking, assuming 6-inch, nominal-width boards installed on 16-inch joists.