Enhance the durability and reliability of your assemblies with this Button Head Socket Cap Screw. Crafted from high-quality stainless steel, it ensures corrosion resistance and longevity in a variety of environments. Featuring a 4-40 thread size and ASME B18.3 specification, it guarantees precise and secure fastening. The hex socket drive type offers easy installation, while the .3125-inch length makes it suitable for a range of applications. Rest assured, this screw is fully compliant with RoHS regulations, making it an environmentally friendly choice for your projects. Elevate your hardware with this essential component.