If you work in commercial or industrial electrical installations, you know that sometimes the smallest components make the biggest difference. Rigid nipples might be modest in size, but they play an essential role in making sure electrical systems are safe, efficient, and up to code.
If you haven’t used them before—or aren’t quite sure which type to pick—this post will walk you through the basics.
A rigid nipple is a short segment of threaded rigid metal conduit (RMC) used to join two enclosures, boxes, or fittings. Typically made from galvanized steel, these nipples create a continuous, grounded pathway for electrical wiring.
They’re ideal for extending a connection between boxes or bridging a narrow gap where a full conduit run isn’t practical or necessary.
You’ll often find rigid nipples used in:
They’re particularly useful when connecting metal enclosures placed side-by-side, or when precise spacing is required. Their rigid construction offers both mechanical protection and reliable electrical grounding—making them a go-to in demanding environments.
Rigid nipples are manufactured in a range of diameters and lengths to meet NEC requirements and adapt to various job site conditions.
Common diameters include:
Standard lengths often available:
Custom lengths can also be sourced through many suppliers. Most rigid nipples come with NPT threads on both ends and are built to ANSI and NEC standards.
This component is a staple among:
In short, anyone working on commercial, industrial, or heavy-duty electrical installations where safety, durability, and code compliance are critical will use rigid nipples on a regular basis.
Though small, rigid nipples deliver important benefits:
It’s one of those components that helps electricians and contractors work smarter, faster, and safer.
