Enhance your fastening applications with this Button Head Socket Cap Screw. Made from durable stainless steel and featuring a sleek thermal black oxide finish, this screw offers both strength and style. With a 4-40 thread size and a length of .3125 inches, it is perfect for various projects. Its hex socket drive type ensures easy installation, while its ASME B18.3 specification guarantees quality performance. Plus, it is fully RoHS compliant, making it an environmentally friendly choice. Upgrade your hardware with this reliable and versatile screw.