Key facts
- HS code
- 8401.40
- Covers
- Parts of nuclear reactors
- Edition
- HS2022
- Duty in the United States
- See its 1 line
Summary
HS code 8401.40 covers parts of nuclear reactors. It sits in heading 84.01 (nuclear reactors; fuel elements (cartridges), non-irradiated, for nuclear reactors; machinery and apparatus for isotopic separation) in chapter 84 (nuclear reactors, boilers, machinery and mechanical appliances; parts thereof). Other goods of heading 84.01 are classified under 8401.10 (nuclear reactors), 8401.20 (machinery and apparatus for isotopic separation, and parts thereof) and 8401.30 (fuel elements (cartridges), non-irradiated). National tariff lines under 8401.40 are live on border.bot for the United States (1 line, also used by 1 other country).
What this code covers
HS code 8401.40 covers parts of nuclear reactors.
The legal text of the subheading is “Parts of nuclear reactors”, in HS2022.
What it doesn’t cover
Other goods of heading 84.01 are classified under 8401.10 (nuclear reactors), 8401.20 (machinery and apparatus for isotopic separation, and parts thereof) and 8401.30 (fuel elements (cartridges), non-irradiated).
How it is structured
8401.40 is a six-digit subheading. Its first two digits, 84, are the chapter; the first four, 8401, are heading 84.01; the last two, 40, identify the subheading within the heading.
Countries add their own digits after these six for their national tariff lines.
- Subheading 8401.40
- Parts of nuclear reactors
In other countries
National tariff lines under 8401.40 are live on border.bot for the United States (1 line, also used by 1 other country).
- United States1 line, used by 1 other country
Frequently asked questions
What does HS code 8401.40 cover?
HS code 8401.40 covers parts of nuclear reactors.
Which heading and chapter is HS code 8401.40 in?
HS code 8401.40 is in heading 84.01 (nuclear reactors; fuel elements (cartridges), non-irradiated, for nuclear reactors; machinery and apparatus for isotopic separation) in chapter 84 (nuclear reactors, boilers, machinery and mechanical appliances; parts thereof).
Where are goods of heading 84.01 classified when 8401.40 doesn’t fit?
Other goods of heading 84.01 are classified under 8401.10 (nuclear reactors), 8401.20 (machinery and apparatus for isotopic separation, and parts thereof) and 8401.30 (fuel elements (cartridges), non-irradiated).
Which countries’ tariffs list national lines under HS code 8401.40?
National tariff lines under 8401.40 are live on border.bot for the United States (1 line, also used by 1 other country).
Sources and updates
The Harmonized System legal text comes from border.bot release 2 (edition HS 2022), imported from a file, and has been live since 11 October 2026.
This page was last updated on 11 October 2026.
Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.