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3-1/2-in Deck Screws

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3-1/2-in Deck Screws to Build Sturdy Decks

A 3-1/2-in deck is only high-quality as the tools and supplies used to build it. At Lowe's, you can choose from a variety of 3-1/2-in deck screws specifically designed for a number of different deck constructions, including wood-to-wood, composite, and metal-to-metal. 


Find finishes that use epoxy, polymer, stainless steel, and ceramic that provide durability and protection against rust. Wood-to-wood 3-1/2-in deck screw options include weather treatment for decks that survive the elements, epoxy coating for rust and corrosion protection, and all kinds of heads, including flat, countersinking and Phillips.


Composite 3-1/2-in deck screws are specially designed for composite wood decks to limit fiber mushrooming. Choose color matching 3-1/2-in screws for composite lumber, points that are designed to eliminate pre-drilling or 3-1/2-in screws with a six-sided drive for greater torque control. And for decks with stainless steel framing, look for stainless steel 3-1/2-in deck screws with options including zinc-plating finish and color-matched coating that prevent corrosion.