The Button Head Socket Cap Screw, a durable and high-performance fastening solution for various applications. Made from steel with a thermal black oxide finish, this screw offers exceptional strength and corrosion resistance. Designed to ASME B18.3 specifications, it ensures reliable performance. Featuring a 4-40 thread size and Torx drive type, it allows for easy installation and secure fastening. With a length of .5 inches, it is perfect for use in tight spaces. RoHS compliant, this screw meets environmental standards without compromising on quality. Upgrade your fastening needs with this premium Button Head Socket Cap Screw.