Coupling Nuts
Coupling nuts are long hex nuts internally threaded along their full length, used to join two sections of threaded rod or to extend the reach of a bolt or stud in suspended assemblies, tension systems, and anchoring applications. Blue Ribbon Fastener stocks coupling nuts in zinc-plated carbon steel and stainless steel in both inch and metric thread sizes, providing reliable supply for construction, HVAC, plumbing, and industrial installation teams who need a simple, strong threaded rod connector.
Usages for Coupling Nuts
Coupling nuts are used wherever two threaded elements need to be joined end-to-end — including hanger rod extensions for ceiling-mounted mechanical systems, tension rod assemblies in curtain walls and structural glazing, anchor rod extensions in concrete foundations, turnbuckle and rigging assemblies, and threaded rod couplings in suspended piping and ductwork. Their hex outer profile allows tightening with a wrench, and their full-thread internal profile ensures engagement across the entire coupling length for maximum strength.
Coupling Nuts for all Industries
Coupling nuts are widely used in HVAC and mechanical contracting, structural glazing and curtain wall installation, electrical conduit support systems, suspended ceiling grid systems, and civil and structural construction. Mechanical contractors, electrical installers, structural glaziers, and building tradespeople all use coupling nuts as a standard component in threaded rod assemblies. Blue Ribbon Fastener supplies coupling nuts in the thread sizes and finishes that keep installation crews moving without sourcing delays.
Coupling Nuts Features for Engineers & Buyers:
- Full internal thread for maximum engagement strength
- Hex outer profile for standard wrench and socket installation
- Available in zinc-plated carbon steel and 18-8 stainless steel
- Stocked in inch coarse and fine thread and metric thread sizes
- Meets ASME B18.2.2 dimensional standards
- Ideal for hanger rod extensions, tension rod systems, and anchor extensions
- Volume pricing available — call or request a quote
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