Enhance your fastening solutions with our Button Head Socket Cap Screw. Crafted from high-quality steel with a durable Thermal Black Oxide finish, this ASME B18.3 compliant screw guarantees both strength and corrosion resistance. Featuring a 5/16-18 thread size and 4-inch length, it is perfect for a variety of applications. The 10.9 material grade ensures reliable performance, while the Hex Socket drive type allows for easy installation. Upgrade your hardware collection with this essential component. Please note, this product is not RoHS compliant.