Introducing our Sems Machine Screw, a reliable and efficient fastening solution for your projects. Constructed from high-quality steel with a durable zinc finish, this screw ensures long-lasting performance in various applications. Featuring a 4-40 thread size and a Phillips drive type, it offers easy installation and secure fastening. The included internal tooth washer provides added stability, making it ideal for use in machinery, electronics, and more. With a sleek pan head design and a length of .3125 inches, this screw is versatile and practical for a wide range of tasks. Rest assured, it is fully ROHS compliant, meeting environmental standards. Upgrade your fastening arsenal with this top-notch Sems Machine Screw.