Hex Rod Coupling Nuts

Hex rod coupling nuts are long, fully threaded nuts that join two lengths of threaded rod or bolt end to end. They are also used to make standoffs and to adjust height. Reducer coupling nuts have a different thread on each end, so you can connect two rod sizes. We stock zinc-plated couplings from #4-40 to 1-1/2"-6 in coarse and fine thread.

Hex Rod Coupling Nuts | The Nutty Company, Inc.

Specifications

Coarse (USS/UNC): #4-40 through 1-1/2"-6, many sizes in two lengths
Fine (SAE/UNF): #10-32 through 3/4"-16
Reducers: 3/8"-16 to 1/4"-20 up to 3/4"-10 to 5/8"-11
Finish: zinc plated (some large sizes plain); width and length listed on each item

Common Uses

Extending threaded rod for pipe, duct and electrical hangers
Connecting threaded rod to hanger bolts
Standoffs, leveling and adjustment

FAQ

How much thread should go into a coupling nut?
Thread each rod in about halfway so both ends have equal engagement. Marking the rods before assembly helps you check this.

Are hex coupling nuts and coupling hex nuts the same?
Yes. Both names describe the same long nut used to join two threaded parts.

Related: Threaded Rod | Hanger Bolts

Free shipping on orders over $100, and orders placed before noon EST ship the same day. Purchase orders are accepted from government agencies, schools, hospitals, municipalities and companies with established credit with The Nutty Company, Inc.