Small Parts Steel Pan Head Machine Screw, Black Oxide Finish, Meets ASME B18.6.3, #1 Phillips Drive, #4-40 Thread Size, 1/2" Length, Fully Threaded, Import (Pack of 100)
Machine screws are threaded fasteners that are typically used with nuts or drilled and tapped (threaded) holes. They 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 driver required to install and remove the screw.
