Coupling nut is a threaded fastener for joining two male threads, most commonly a threaded rod, but also pipes. The outside of the fastener is usually a hex or knurling so a wrench can hold it. Variations include reducing coupling nuts, for joining two different size threads; sight hole coupling nuts, which have a sight hole for observing the amount of engagement; and coupling nuts with left-handed threads. These are used to make up long rod assemblies from shorter lengths of rods. The rods are threaded into the coupling nut for a certain distance. Coupling nut dimensions are described by the Industrial Fasteners Institute in standard IFI-128. It is given a plain finish. It is either cold drawn or hot rolled depending on the bar stock used. Coupling nuts threaded with two different thread sizes and profiles are called reducing coupling nuts. Coupling nut can be used to tighten a rod assembly inward or to press a rod assembly outward. Ever Hardware provides custom-made fasteners and customizable packaging.

Brass is a metal alloy made of copper and zinc; the proportions of zinc and copper can be varied to create a range of brasses with varying properties. It is a substitutional alloy: atoms of the two constituents may replace each other within the same crystal structure.
By comparison, bronze is principally an alloy of copper and tin. However, bronze and brass may also include small proportions of a range of other elements including arsenic, phosphorus, aluminum, manganese, and silicon. The term is also applied to a variety of brasses, and the distinction is largely historical. Modern practice in museums and archaeology increasingly avoids both terms for historical objects in favor of the all-embracing “copper alloy”.

Category Coupling Nut
Finish Electro-Plating
Thread type Metric/Imperial/According to Request
Material Stainless Steel/Carbon Steel/Aluminum/Brass/Copper, etc.
Brand Ever Hardware
Place of origin China Mainland
Size option M1.0 to M18/#0 to 1/2″
Coupling nut knurling fasteners brass nuts and bolts supplier

Amazing Product: Get It Now!

This is where your amazing product custom-made from!

How To Place An Order

  • Click the “Send Email” button below.

  • Send your drawing and specification to us.

  • Check the response and help us to confirm the details.

  • Check the quotation & invoice you received and confirm the price.

  • Arrange the prepayment and waiting for the delivery time we agreed on the quotation.

  • Ever Hardware Industrial Limited arrange the shipment and inform you the tracking message, waiting for your feedback and next cooperation.

What Client’s Say

Those look great! All the specs look perfect.
Kent De Mond
Perfect ! This is that I need.
Hernán Balboa
Thank you very much.
The bolts are perfect and they’re fits good.
Ashley
The nut fits perfect on our M2.5 screw part.
Height is also ok.
Mirjam
I tested the bolts this morning and they are perfect. Thank you so much.
Bill McDonald

We are professional on precision coupling nut and custom-made fasteners services!

This is where your amazing product design can go so your clients can feel all about the features and see how awesome it is!

  • Fast responsive so your design will always be treated seriously and come true very soon!

  • Highly precision gives you the opportunity to occupy the market easily!