Introducing our Sems Machine Screw, a versatile and essential component for various assembly applications. This stainless steel screw features a 4-40 thread size, perfect for securely fastening components. With an external tooth washer included, it ensures optimal grip and stability. The pan head design and Phillips drive type make installation a breeze. Measuring at .4375 inches in length, it's suitable for a range of projects. Plus, it's RoHS compliant, meeting environmental standards. Trust in the quality and reliability of this essential screw for your next project.