Introducing our stainless steel Sems Machine Screw, a reliable fastening solution that meets ASME B18.13 specifications. With a thread size of 4-40 and a length of .5 inches, it's perfect for a variety of applications. Featuring a durable waxed finish coating for added protection, this screw is not only functional but also resistant to corrosion. The included External Tooth washer ensures secure attachment, while the Pan head with Phillips drive type allows for easy installation. Rest assured, this product is RoHS compliant, making it a sustainable choice for your projects. Elevate your fastening needs with this high-quality Sems Machine Screw.