Introducing our Sems Machine Screw, a versatile essential for all your fastening needs. Crafted from durable steel with a sleek zinc finish, this screw guarantees strength and corrosion resistance. Compliant with ASME B18.13 standards, it ensures quality and precision in every application. Featuring a 4-40 thread size, it is suitable for a wide range of projects. The included Narrow Flat Washer provides extra support, while the Phillips drive type and Pan head make installation a breeze. With a length of .25 inches, it's perfect for various tasks. Rest assured, this product is RoHS compliant, meeting environmental standards for added peace of mind. Upgrade your toolkit with this high-performance Sems Machine Screw.