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Fastener Superstore Blog

Our Selection of Coupling Nuts, AKA Rod Couplings, AKA Couplers

Coupling Nuts at Fastener SuperStore

Fastener Superstore is your source for coupling nuts, also known as rod couplings. We carry standard coupling nuts in diameters from 1/4" up to 1", and in lengths from 7/16" to 3".

Coupling nuts are longer than regular hex nuts and are used to join threaded rod or pipes together.

Standard coupling nuts join two pieces that have the same diameter / thread count. We also carry reducer coupling nuts which allow two different sized rods or pipes to be joined together.

Our standard coupling nuts are available in standard or grade 5 steel, with a zinc finish. We also offer them in 18-8 Stainless Steel. Our reducer coupling nuts are available in steel / zinc and come in four common sizes.

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