This class 3000 bushing is a stainless steel pipe fitting with male National Pipe Taper (NPT) threads on one end and female NPT threads on the other for connecting two different types of pipes. It has a hexagonal head for leverage and use with a wrench. This class 3000 bushing is made from stainless steel 316/316L for corrosion resistance and has been forged for durability. Class is a standard relating to tolerance, construction, dimension, and wall thickness, but it is not a direct measurement of maximum working pressure. This fitting meets standards ASTM A182, ASME SA182, and ANSI B16.11 for quality assurance. Bushings are pipe fittings used to connect pipes of two different sizes. They have male threads on the outside and female threads on the inside. Pipe fittings are components used for connecting, terminating, controlling flow, and changing the direction of piping in many different industries. When purchasing pipe fittings, consider the application, as this will affect material type, shape, size and required durability. Fittings are available threaded or unthreaded, in many shapes, styles, sizes, and schedules (pipe wall thickness).