Rigid Threaded Coupling

  • Constructed from sturdy materials, such as steel or malleable iron, rigid threaded couplings offer exceptional strength and durability, ensuring long-term performance in demanding environments.
  • Many rigid threaded couplings feature a protective coating or finish, such as zinc plating or hot-dip galvanization, to enhance corrosion resistance and prolong the lifespan of the fitting, even in harsh conditions.
  • With standard NPT threads, installing rigid threaded couplings is quick and straightforward, requiring minimal tools and equipment. This ease of installation helps reduce labor costs and project timelines.
  • By creating a tight seal between conduits, rigid threaded couplings ensure reliable electrical connections, minimizing the risk of loose or faulty connections that could compromise the safety and performance of the system.



Product Description

Rigid threaded couplings are mechanical fittings designed to connect two sections of rigid conduit in a straight line. These couplings feature threaded ends that allow for easy attachment to the conduit, providing a secure and tight connection. They are available in various sizes to accommodate different conduit diameters and are typically constructed from materials such as steel or malleable iron to ensure strength and durability.

Specifications and Components

The design of rigid threaded couplings consists of two threaded ends, each with standard NPT (National Pipe Thread) threads, allowing for easy installation onto the rigid conduit. These threads create a tight seal when joined together, preventing moisture, dust, and other contaminants from entering the conduit. Rigid threaded couplings may also include set screws or compression fittings to further secure the connection and prevent loosening over time.


1. Electrical Conduit Systems: Rigid threaded couplings are extensively used in electrical conduit systems to join sections of rigid metal conduit (RMC) or intermediate metal conduit (IMC). These couplings provide a strong and durable connection that protects electrical wiring in commercial, industrial, and residential buildings.

2. Mechanical Piping Systems: In mechanical piping systems, rigid threaded couplings are employed to connect rigid pipes made of materials like steel or stainless steel. These couplings are suitable for applications such as water supply lines, fire protection systems, HVAC systems, and industrial piping where a robust connection is essential.

3. Structural Applications: Rigid threaded couplings can be used in structural applications where rigid pipe assemblies are required for supporting structures, such as handrails, guardrails, fencing, and other architectural elements that demand stability and strength.

4. Oil and Gas Industry: Rigid threaded couplings are used in the oil and gas industry for connecting pipes in drilling operations, pipelines, refineries, and other facilities where rugged connections are necessary to handle harsh environments and high-pressure conditions.

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Rigid Threaded Coupling

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