Section XVI · Nuclear reactors, boilers, machinery and mechanical appliances; parts

8473.50

Parts and accessories equally suitable for use with machines of two or more of the headings 8470 to 8472:

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How this code is built
84

Chapter

Nuclear reactors, boilers, machinery and mechanical appliances; parts

73

Heading

The product family within the chapter

50

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

  1. 84Nuclear reactors, boilers, machinery and mechanical appliances; parts
  2. 8473Parts and accessories (other than covers, carrying cases and the like) suitable for use solely or principally with machines of headings 8470 to 8472:
  3. Parts and accessories equally suitable for use with machines of two or more of the headings 8470 to 8472:

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.

  • 8473.50.30.00Printed circuit assembliesNo.
    General
    Free
    Special (FTA)
    —

    No preferential rate published.

    Column 2
    35%

    Countries without normal trade relations.

  • 8473.50.60.00Parts and accessories, including face plates and lock latches, of printed circuit assemblieskg
    General
    Free
    Special (FTA)
    —

    No preferential rate published.

    Column 2
    35%

    Countries without normal trade relations.

  • 8473.50.90.00Otherkg
    General
    Free
    Special (FTA)
    —

    No preferential rate published.

    Column 2
    35%

    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.

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Other subheadings in heading 8473

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.