Enhance your fastening needs with this Sems Machine Screw. Crafted from durable stainless steel, it ensures reliable performance and longevity. With an ASME B18.13 specification, you can trust in its quality. Featuring a 1/4-20 thread size and a .5-inch length, it's perfect for various applications. The external tooth washer provides added stability, while the pan head and Phillips drive make installation a breeze. Rest assured, it's also RoHS compliant, meeting environmental standards. Upgrade your hardware collection with this versatile and efficient machine screw.