Hyjoy 5 Pack Square Bolts — 1/2" D x 3-1/16" x 5-5/16" Steel with Plates & Nuts for Automobiles, Ski, Sailboat

Overview: Heavy-duty Hyjoy square bolts designed for marine and general fastening tasks. Confirm fit using the product images before installation. Key dimensions: diameter 1/2", inner width 3-1/16", internal depth 5-5/16", thread length 2.6 inches. Material & durability: Manufactured from steel with enhanced hardness and built-in rust and corrosion resistance, these bolts are made to last in salt water, fresh water, and coastal environments. Applications: Intended for securing square beams and shafts on items such as marine trailers and motorboats. Also suitable for use with wood, pipe, tube, plumbing projects, and other industrial or automotive applications (Automobiles, Ski, Sailboat). What's included: 5 square bolts, 10 nuts, and 5 plates—complete hardware to meet your installation needs. Customer support: If you have any questions or are unsatisfied with the product, please email us and we will strive to respond within 24 hours.