Hex Coupling Nuts

Coupling Nuts, also known as Extension Nuts, are threaded fastener for joining two male threaded objects, most commonly threaded rod, but also pipes. The outside of the coupling nut is usually a hex so it can be gripped by a wrench.

Hex Coupling Nuts Diameters

Hex Coupling Nuts are available on the FCH Network with Imperial/US diameters that range from #1 to 3 and with Metric diameters that range from M3 to M42. The length of Hex Coupling Nuts is usually measured from the point to the underside of the head.

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Hex Coupling Nuts Finishes

Hex Coupling Nuts are available on the FCH Network in finishes or coatings that range from Plain to Passivated

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