HTS heading
8547Insulating fittings for electrical machines, appliances or equipment, being fittings wholly of insulating material apart from any minor components of metal (for example, threaded sockets) incorporated during molding solely for the purposes of assembly, other than insulators of heading 8546; electrical conduit tubing and joints therefor, of base metal lined with insulating material:
Rates as published in 2026 HTS Revision 15, captured 2026-08-13. Source: USITC Harmonized Tariff Schedule.
Current duty rates (4 lines)
| Code | Description | General | Special | Column 2 |
|---|---|---|---|---|
| 8547.10.40.00 | Ceramic insulators to be used in the production of spark plugs for natural gas-fueled, stationary, internal combustion engines | 3% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 60% |
| 8547.10.80.00 | Other | 3% | Free (A,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 60% |
| 8547.20.00.00 | Insulating fittings of plastics | Free | — | 30% |
| 8547.90.00 | Other | 4.6% | Free (A,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 45% |
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