What is a short piece of pipe with outside threads at both ends called?

The term for a short piece of pipe with outside threads at both ends is known as a nipple. In plumbing and pipefitting, a nipple is typically used to connect two other fittings or pipes, allowing for a secure and reliable connection in various systems. Nipples are often made of materials such as copper, brass, or PVC, and they come in various lengths and diameters to suit different applications.

Understanding the function of a nipple is crucial in park maintenance, as it impacts irrigation systems, water supply lines, and other plumbing tasks that may arise in maintaining park facilities or landscapes. Proper knowledge about different pipe fittings, including nipples, helps ensure that repairs and installations are performed correctly.

The other options refer to different types of pipe fittings. For example, a connector generally refers to any type of fitting that joins two pipes, while a stub is a short length of pipe with no threads at one end. An elbow is a fitting that changes the direction of flow in a piping system, usually at a right angle. Each plays a specific role but does not match the description of a short piece of pipe with threads at both ends as accurately as a nipple does.