Enhance your assembly process with our Sems Machine Screw, a reliable and efficient solution for fastening applications. This ASME B18.13 compliant screw features a #4-40 thread size, making it suitable for a wide range of projects. Crafted from durable steel with a corrosion-resistant zinc finish, it ensures long-lasting performance. The included external tooth washer provides added security, while the pan head and Phillips drive type offer easy installation. With a length of 1.125 inches, this screw is perfect for various industrial and DIY tasks. Rest assured of its quality, as it meets stringent industry standards. Upgrade your toolkit with this essential fastening component.