Introducing our Button Head Socket Cap Screw, a versatile fastening solution crafted from high-grade steel with a durable Thermal Black Oxide finish. Designed to meet ASME B18.3 specifications, this screw boasts a thread size of 5/16-18 and a length of .25 inches, making it ideal for a wide range of applications. With a 10.9 material grade and hex socket drive type, it offers superior strength and ease of installation. Compliant with RoHS regulations, this screw is the perfect choice for environmentally conscious projects. Elevate your fastening game with this premium quality Button Head Socket Cap Screw.