Enhance your fastening solutions with this high-quality Button Head Socket Cap Screw. Designed for durability and precision, it features a 4-40 thread size and is constructed from stainless steel for optimal strength. The Thermal Black Oxide finish not only adds a sleek aesthetic but also provides corrosion resistance, making it suitable for a variety of applications. With a convenient hex socket drive type and a length of .25 inches, this screw offers easy installation and secure fastening. Rest assured, it is also RoHS compliant, meeting stringent environmental standards. Elevate your projects with the reliability and performance of this ASME B18.3 specified screw.