The Flat Head Machine Screw, a versatile fastening solution for a variety of applications. This Phillips drive screw features a 4-40 thread size and a durable steel construction with a zinc finish coating, ensuring reliable performance and corrosion resistance. With a length of .4375 inches, it's perfect for securely fastening components in place. Compliant with RoHS regulations, this screw offers both functionality and environmental responsibility. Upgrade your fastening arsenal with this essential hardware component.