In plumbing and piping, a common pneumatic component is the pipe nipple. A pipe nipple consists of a short piece of pipe that is male threaded at each end. Pipe nipples are commonly used for connecting two other pneumatic fittings.
A hex nipple is a specific type of pipe nipple. Generally, these types of pneumatic components have a hexagonal section in between the male threads for wrench grasping capabilities. Hex nipples function like a nut that can be gripped by a normal wrench. This provides a greater mechanical advantage than normal rounded pipe nipples. Some of the common uses for hex nipples include:
Water work applications
Ship building industry
Petrochemical & gas industries
General pipe connecting projects
Seamless nipples are a variety of pipe nipple that are made from seamless pipe. They have a variety of different style threads including: