HS code 8404.10: Auxiliary plant for use with boilers of heading 84.02 or 84.03
Last updated
Key facts
- HS code
- 8404.10
- Covers
- Auxiliary plant for use with boilers of heading 84.02 or 84.03
- Edition
- HS2022
- Duty in the United States
- See its 2 lines
Summary
HS code 8404.10 covers auxiliary plant for use with boilers of heading 84.02 or 84.03. It sits in heading 84.04 (auxiliary plant for use with boilers of heading 84.02 or 84.03 (for example, economisers, super-heaters, soot removers, gas recoverers); condensers for steam or other vapour power units) in chapter 84 (nuclear reactors, boilers, machinery and mechanical appliances; parts thereof). Other goods of heading 84.04 are classified under 8404.20 (condensers for steam or other vapour power units) or 8404.90 (parts). National tariff lines under 8404.10 are live on border.bot for the United States (2 lines, also used by 1 other country).
What this code covers
HS code 8404.10 covers auxiliary plant for use with boilers of heading 84.02 or 84.03.
The legal text of the subheading is “Auxiliary plant for use with boilers of heading 84.02 or 84.03”, in HS2022.
How it is structured
8404.10 is a six-digit subheading. Its first two digits, 84, are the chapter; the first four, 8404, are heading 84.04; the last two, 10, identify the subheading within the heading.
Countries add their own digits after these six for their national tariff lines.
- Subheading 8404.10
- Auxiliary plant for use with boilers of heading 84.02 or 84.03
In other countries
National tariff lines under 8404.10 are live on border.bot for the United States (2 lines, also used by 1 other country).
- United States2 lines, used by 1 other country
Frequently asked questions
What does HS code 8404.10 cover?
HS code 8404.10 covers auxiliary plant for use with boilers of heading 84.02 or 84.03.
Which heading and chapter is HS code 8404.10 in?
HS code 8404.10 is in heading 84.04 (auxiliary plant for use with boilers of heading 84.02 or 84.03 (for example, economisers, super-heaters, soot removers, gas recoverers); condensers for steam or other vapour power units) in chapter 84 (nuclear reactors, boilers, machinery and mechanical appliances; parts thereof).
Where are goods of heading 84.04 classified when 8404.10 doesn’t fit?
Other goods of heading 84.04 are classified under 8404.20 (condensers for steam or other vapour power units) or 8404.90 (parts).
Which countries’ tariffs list national lines under HS code 8404.10?
National tariff lines under 8404.10 are live on border.bot for the United States (2 lines, 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.