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HTS 8547.10 (8547.10.00) duty rate

8547.10.00 is not a rated tariff line. Subheading 8547.10 (Insulating 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; electric) is split into 2 tariff lines, and the duty rate depends on which one your product falls under:

LineDescriptionGeneralSection 301 (China)Exclusions
8547.10.40Ceramic insulators to be used in the production of spark plugs for natural gas-fueled, station…3%List 3 +25%
8547.10.80Insulating fittings of ceramics: Other3%List 3 +25%

Open the line that matches your product for its full rate table, Section 301 actions, exclusions, statistical suffixes and a free duty calculator.

Official USITC HTS, 2026HTSRev20 · check on hts.usitc.gov

Subheading 8547.10 at a glance

Heading 8547 · Chapter 85 · HTS lookup

General information from the official US Harmonized Tariff Schedule (USITC); not legal or customs advice. Classification is decided by CBP.