Enhance the structural integrity of your projects with our Button Head Socket Cap Screw. Crafted from durable steel with a thermal black oxide finish, this ASME B18.3 compliant screw boasts a thread size of 5/16-18 and a length of 4 inches. Featuring a high-grade 10.9 material composition, it offers superior strength and reliability. The hex socket drive type ensures easy installation, making it ideal for various applications. Rest assured, this screw is RoHS compliant, aligning with environmental standards for sustainable construction practices. Elevate your assembly processes with this essential hardware component.