The Flat Head Socket Cap Screw, a sleek and efficient fastener designed for a wide range of applications. Crafted from durable stainless steel and coated in a sleek 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 securing components in place with precision. Compliant with RoHS regulations, it is also environmentally friendly. Trust in the quality and reliability of this ASME B18.3 specified screw for your fastening needs.