Threaded Expansion Coupling for Conduit
Threaded steel expansion coupling for rigid conduit to accommodate thermal movement, with internal insulating sleeve of crosslinked polyethylene. Falls under HTS 8547.90.00.30 for threaded base metal joints lined with insulation, minor metal parts for assembly. Used in long conduit runs like bridges or tunnels.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If non-insulated expansion fittings
Plain steel pipe couplings without liner under Chapter 73.
If plastic expansion joint version
Non-metallic construction shifts to other plastic articles.
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Import Tips & Compliance
• Include expansion joint calculation sheets for engineering approval; UL expansion fitting listings required; avoid classifying with full conduit lengths as 7306 tubes
Related Products under HTS 8547.90.00.30
Threaded EMT Compression Connector
A threaded joint for electrical metallic tubing (EMT) conduit made of steel lined with PVC insulation, used to connect conduit sections securely in building wiring installations. It falls under HTS 8547.90.00.30 as a threaded joint of base metal lined with insulating material, incorporating minor metal components for assembly. The threading ensures tight, grounded connections compliant with NEC standards.
Threaded Liquidtight Connector for Flexible Conduit
Threaded steel connector for liquidtight flexible metal conduit (LFMC), lined with thermoplastic insulation to prevent moisture ingress in wet locations. Classified under HTS 8547.90.00.30 for its base metal body with insulating liner and threaded assembly features for electrical enclosures. Commonly used in industrial and outdoor wiring applications.
Threaded RMC Coupling
Rigid metal conduit (RMC) threaded coupling made from zinc-coated steel with internal PVC insulating liner, used for joining straight conduit runs in hazardous locations. Meets HTS 8547.90.00.30 criteria as a threaded joint of base metal lined with insulating material for electrical protection. Essential for underground and exposed wiring.
Threaded Set-Screw Conduit Connector
Steel threaded connector with set-screw for securing EMT or IMC conduit to electrical boxes, featuring nylon insulating liner to prevent ground faults. HTS 8547.90.00.30 applies due to base metal construction with insulating material lining and minor metal threading for assembly. Used in commercial building electrical systems.
Threaded Watertight Hub Adapter
Threaded steel hub adapter for connecting conduit to enclosures in wet or damp locations, lined with neoprene insulation for sealing and electrical isolation. Qualifies for HTS 8547.90.00.30 as a base metal lined joint with threaded metal components for molding/assembly. NEMA 4X rated for industrial use.