Threaded RMC Coupling
Threaded rigid metal conduit (RMC) couplings are zinc-coated steel fittings with an internal PVC insulating liner, used to join straight conduit runs in hazardous locations. They are classified under tariff item 8547.90.00 as electrical conduit fittings of base metal lined with insulating material, providing secure and insulated joints in conduit systems.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the coupling is not lined with insulating material
Unlined steel couplings are classified as base metal tube fittings of heading 73.07.
If the coupling is made entirely of insulating material
All-insulating couplings are classified under insulating fittings of heading 85.47.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Verify the zinc coating and PVC liner meet CSA standards for hazardous locations
• Declare under 8547.90.00 as base metal conduit fittings with insulating lining
• Include the hazardous location certification (e.g
• Class I Division 2) in your documentation
Related Products under Tariff item 8547.90.00
Appliance Insulating Spacer Blocks
Appliance insulating spacer blocks are phenolic or plastic components that electrically isolate parts within household appliances. They incorporate minor metal threaded inserts to facilitate bolted assembly, which is permitted under this tariff item. These fittings are wholly of insulating material apart from those minor metal components, making them classifiable as insulating fittings for electrical machines.
Bakelite Insulating Switchboard Fittings
Mounting fittings for circuit breakers in switchboards, made of bakelite (phenolic) with threaded steel sockets for secure insulated assembly. These fittings are wholly of insulating material apart from minor metal components incorporated during moulding solely for assembly purposes, qualifying under tariff item 8547.90.00.
Brass Insulated Conduit Compression Connector
Compression-type connectors for liquid-tight insulated conduits, with a brass body and Santoprene thermoplastic lining for secure, insulated wire protection. These are joints for electrical conduit tubing of base metal lined with insulating material, falling under tariff item 8547.90.00.
Ceramic-Filled Polymer Insulating Standoffs
Standoff insulators for mounting electrical components, made of polymer base with ceramic filler and minor brass threaded inserts, used in high-voltage appliances. These are insulating fittings wholly of insulating material apart from minor metal components for assembly, classified under tariff item 8547.90.00.
Electrical Insulating End Caps for Conduit
Electrical insulating end caps for conduit are plastic components that seal and insulate the terminations of electrical conduit tubing. They are molded with minor metal parts for attachment to the conduit, which is acceptable under this heading. These caps serve as insulating fittings for electrical conduit systems, wholly of insulating material apart from the minor metal components.
Electrical Insulating Potting Cups
Electrical insulating potting cups are plastic containers used to encase and insulate electrical components before encapsulation. They include minor metal pins for positioning components during the molding or assembly process. These cups are insulating fittings wholly of insulating material apart from the minor metal elements, qualifying under this tariff item.