Enhance structural integrity in your projects with our Button Head Socket Cap Screw. Crafted from durable steel with a high-grade 10.9 material classification, it ensures reliable performance in demanding applications. The thermal black oxide finish not only provides a sleek appearance but also offers corrosion resistance, making it ideal for both indoor and outdoor use. With a precise thread size of 5/16-18 and a length of 2.25 inches, it's perfect for securely fastening components. Featuring a hex socket drive type, installation is quick and efficient. Rest assured, this screw complies with RoHS standards, meeting environmental regulations. Elevate your construction and assembly tasks with this premium fastening solution.