The Button Head Socket Cap Screw, a sleek and versatile addition to your fastening toolkit. Crafted from durable stainless steel, this screw ensures reliable performance in various applications. Its 4-40 thread size and ASME B18.3 specification guarantee a precise fit and secure hold. Featuring a Torx drive type, installation is a breeze, while the .3125-inch length offers flexibility for different projects. Rest assured, this screw is also RoHS compliant, meeting environmental standards. Upgrade your fastening game with this essential hardware essential.