Introducing our Sems Machine Screw, a versatile fastening solution designed for efficiency and durability. Compliant with ASME B18.13 specifications, this screw features a 4-40 thread size and a sturdy steel construction with a zinc finish coating for enhanced corrosion resistance. The included Split Lock Washer ensures secure attachment, while the Pan head and Phillips drive type allow for easy installation. With a length of .25 inches, it's perfect for various applications. Rest assured, this product is RoHS compliant, meeting environmental standards. Upgrade your fastening process with our reliable Sems Machine Screw.