Chapters › 8547 › 8547.10 › 8547.10.40.00

HTS 8547.10.40.00

Ceramic insulators to be used in the production of spark plugs for natural gas-fueled, stationary, internal combustion engines

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; electrical conduit tubing and joints therefor, of base metal lined with insulating material › Insulating fittings of ceramics

General (normal trade relations)3%
Special (trade programs)Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)
Column 260%
UnitsNo.
As of Revision 22 (2026), effective Oct 30, 2026Source: USITC HTS ↗1 measure adds duty
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Chapter 99 measures that list this product

Each heading’s own text says whether the listing adds duty or exempts the product. Read the heading and its note before relying on a rate.

Measures on products of any country (check their exceptions)