Introducing our Button Head Socket Cap Screw, a versatile fastening solution ideal for a variety of applications. With a thread size of 4-40 and a length of .625 inches, this steel screw offers strength and durability. Featuring a thermal black oxide coating for enhanced corrosion resistance, it meets ASME B18.3 specifications and is RoHS compliant. The 10.9 grade material ensures reliable performance, while the hex socket drive type allows for easy installation. Upgrade your fastening needs with this high-quality screw.