Small Parts 0408CSB Black Oxide Alloy Steel Button Screw, Hex Socket Drive, 4-40 Thread Size, 1/2" Length, Fully Threaded, US Made (Pack of 100) - Ideal for Electronics, Machinery, and Precision Assembly

Product Description

Socket cap screws are threaded fasteners that have a cap head with an internal socket drive for installing in areas with limited side clearance. These screws are available with a variety of head shapes, which determine how the screw interacts with the mating surface, and drive styles, which determine the type of tool required to install the screw.