Section XVI · Electrical machinery and equipment and parts; sound and TV apparatus
8543.10
Particle accelerators
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Chapter
Electrical machinery and equipment and parts; sound and TV apparatus
Heading
The product family within the chapter
Subheading
The specific good, identical worldwide
The first six digits are the same in every country that uses the Harmonized System. The United States adds two more for the tariff rate and, often, two more for statistics — which is why the rates below are listed against 8- and 10-digit numbers rather than against this code.
How the schedule reaches this code
- 85Electrical machinery and equipment and parts; sound and TV apparatus
- 8543Electrical machines and apparatus, having individual functions, not specified or included elsewhere in this chapter; parts thereof:
- Particle accelerators
Published US duty rates
Duty is set at the 8- or 10-digit line, not at this 6-digit subheading, so more than one rate can sit under this code.
- 8543.10.00.00Particle acceleratorsNo.
- General
- 1.9%
- Special (FTA)
- Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)
- Column 2
- 35%
Only if the goods qualify under one of these programs.
Countries without normal trade relations.
This is the listed rate. Antidumping and countervailing duty orders, Chapter 99 actions and preference qualification all change what is actually collected, and classification is a judgement about your goods. Verify with your licensed customs broker before you file.
Estimate the duty for this code
Choose where the goods come from and enter their customs value in US dollars. Free, with no signup — an estimate from the published rates, to confirm with your licensed customs broker.
Other subheadings in heading 8543
Source: U.S. International Trade Commission (USITC) — 2026 HTS Revision 20, released 2026-09-28, published at hts.usitc.gov. A U.S. Government work in the public domain.