The Merit Brass nipple is a schedule 40 aluminum pipe fitting with male National Pipe Taper (NPT) threads for connecting and extending female threaded pipes. The fitting has NPT threads for creating tighter seals than straight threads and is made from Alloy 6061-T6 for increased corrosion resistance and strength. This fitting meets specification ASTM B-241 for quality assurance.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). Merit Brass manufactures pipe nipples following ISO 9001 standards for quality assurance. The company, family-owned since 1937 and headquartered in Cleveland, OH, distributes pipe fittings in the United States and Canada.