Enhance the security of your fastening applications with our Button Head Socket Cap Screw. Perfect for industrial use, this durable steel screw features a 10.9 material grade, ensuring strength and reliability. The sleek Thermal Black Oxide finish not only provides a sleek appearance but also offers corrosion resistance for long-lasting performance. With a 4-40 thread size and a length of .3125 inches, this screw is ideal for a variety of projects. The Hex Socket drive type allows for easy installation and removal, while its compliance with RoHS regulations guarantees its environmental friendliness. Trust in the quality and functionality of this ASME B18.3-compliant screw for all your fastening needs.