Enhance assembly efficiency with our Sems Machine Screw, a versatile fastening solution designed for seamless installation. This steel screw, featuring a 4-40 thread size and a durable zinc coating, ensures optimal performance in various applications. Its ASME B18.13 specification guarantees quality and reliability, while the included internal tooth washer provides added stability. With a convenient Phillips pan head and a length of .25 inches, this screw is perfect for securing components with ease. RoHS compliance further underscores its commitment to environmental responsibility. Upgrade your assembly process with this essential component.