Value Collection 250387 5/8-18 Unf Coupling Nut Zinc-plated Steel

Product Description

The VALUE COLLECTION 250387 is a standard coupling nut designed to join two threaded rods or extend a threaded fastener along a single axis. Manufactured from Grade 2 steel with a zinc-plated finish for basic corrosion resistance, this nut features a 5/8-18 UNF right-hand thread and measures 2.125 inches overall length with a 13/16-inch width across flats. It is used across general mechanical, structural, and maintenance applications where a full-hex coupling nut is needed to splice or lengthen threaded rod assemblies. Plumbers, electricians, HVAC technicians, and general tradespeople routinely keep coupling nuts on hand for rod hanger and support work.

This coupling nut is suited for residential and commercial applications where threaded rod extensions or fastener linkages are required. Common install scenarios include pipe hanger assemblies, equipment support strut systems, and general mechanical connections using 5/8-18 UNF threaded rod or bolt stock. The hex profile allows standard wrench engagement for secure installation in tight or open spaces.

Key Features

• 5/8-18 UNF right-hand thread for precise fine-thread engagement
• Grade 2 steel construction provides reliable strength for general-duty use
• Zinc-plated finish offers basic corrosion and oxidation protection
• 2.125-inch overall length allows full thread engagement on both ends
• 13/16-inch width across flats fits standard open-end and box wrenches

Compatibility

Designed for use with 5/8-18 UNF threaded rod, studs, or bolts requiring a standard hex coupling nut for extension or joining.

Installation Notes

Coupling nuts of this type are installed by hand-threading onto mating 5/8-18 UNF threaded stock, then tightening with an open-end or box wrench to the appropriate torque for the application per relevant fastener standards. Ensure both mating threads are clean and free of damage before assembly. De-energize and isolate any supported equipment or piping systems before servicing hanger or support hardware. Do not exceed the load ratings specified for Grade 2 fasteners in structural or safety-critical applications.