Screws are important construction tools that come in varying shapes and sizes. Backyard Sidekick also participates in affiliate programs with Clickbank, CJ, ShareASale, and other sites. #8 screw: An excellent all-purpose screw, the #8 screw is 5/32 inches in diameter. test. See more product details. BEST FOR COMPOSITE: Jake Sales Composite Decking Wood Screw. Grip-Rite exterior collated screws are prefect for roofing, decking, siding or trim that will be exposed to the elements. For a better experience, please enable JavaScript in your browser before proceeding. /*