Empire 51G0025 Coupling Nut 1/4-20 Thread 7/8 Inch Steel

Product Description

The EMPIRE 51G0025 is a standard coupling nut used to join two threaded rods or extend the reach of a threaded fastener. Machined from steel with a zinc-plated finish for corrosion resistance, it features a 1/4-20 unified coarse thread in a right-hand direction. The overall length measures 7/8 inches. Coupling nuts like this one are a common hardware item in mechanical assemblies, HVAC equipment mounting, plumbing hangers, and electrical fixture support. Electricians, plumbers, HVAC technicians, and general contractors reach for this nut when connecting threaded rod sections or securing threaded components in tight installations.

This coupling nut is suited for light-duty threaded rod splicing and fastener extension applications across residential and commercial work. It fits standard 1/4-20 threaded rod stock and 1/4-20 machine screws. Common install scenarios include hanger rod assemblies for ductwork, pipe strut systems, and conduit support structures where two shorter rods need to be joined into a continuous run.

Key Features

• 1/4-20 unified coarse right-hand thread for compatibility with standard threaded rod and fasteners
• 7/8 inch overall length provides adequate thread engagement for secure rod-to-rod connections
• Steel construction with zinc-plated finish offers corrosion resistance in typical indoor mechanical environments
• Compact hex body allows engagement with a standard wrench or nut driver

Compatibility

Designed as a standard replacement or supplemental coupling nut for use with 1/4-20 threaded rod and 1/4-20 fastener assemblies in general mechanical, HVAC, plumbing, and electrical support applications.

Installation Notes

Coupling nuts are installed by licensed tradespeople and general mechanics using a standard open-end wrench or nut driver sized to the hex body. Thread both mating rods or fasteners fully into opposing ends of the nut to achieve proper thread engagement before final tightening. Inspect threads on the mating components for damage or contamination before assembly. Follow applicable code requirements such as the NEC or applicable mechanical codes when using threaded rod assemblies for equipment support.