Round stop coupling coil nuts, also known as extension nuts, are typically intended to connect two separate male threaded fasteners together. Coupling nuts are normally used to connect two pieces of threaded rod or pipe together.

Round Stop Coupling coil nuts are often used for joining threaded coil rods or hanger bolts in a variety of applications that require extending threaded rod or attaching like items.   Most coupling nuts are tapped from each end, with the internal threads meeting in the middle.

Coupling nuts are most likely manufactured in low carbon steel plain or zinc plated, but can be custom made to your specifications. They can be installed by screwing onto exposed thread by hand and tightening with a wrench.

Don't see your size? We will custom manufacture coupling coil nuts to your exact specifications.