#8 Frearson Flat Head Silicon Bronze Screws - 100 Pack
#8 Frearson Flat Head Silicon Bronze Screws - 100 Pack
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Silicon bronze screws appear similar to the Phillips head but the Frearson has a more pointed 75 degree V shape. The Frearson drive, with its cross-shape, minimizes cam-out effectively, while the Phillips head, in comparison, is designed to allow cam-out.
Traditional boat builders love these silicon bronze wood screws because they have cut threads and the full-bodied diameter shank. 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. Full-bodied screws are also stronger during drive in, ensuring a better hold.
Available in 10 lengths from 1/2 inch to 2-1/2 inch.
Silicon Bronze is the traditional choice for marine construction. It is corrosion resistant, helps prevent rot around the screw holes when used under water, and is relatively strong. Although stronger than Solid Brass, Silicon Bronze screws are not as strong as Stainless Steel. They require a carefully sized pilot hole to avoid breakage. We recommend drilling twice (once for the root and once for the shank) as well as using fastener lubricant to avoid breakage.




