HS Chapter 84 — Nuclear reactors, boilers, machinery
Harmonized System classification guide · last updated 2026-10-14
HS Chapter
Chapter number
Section
Section name
Typical duty
By subheading & market
HS headings
4-digit headings
What Chapter 84 covers
Engines, turbines, boilers, pumps, furnaces, machinery and mechanical appliances.
Common HS headings in Chapter 84
- 8401 Nuclear reactors
- 8471 Automatic data proc.
- 8481 Taps, valves
Classification notes
Function and intended use are decisive; identical-looking machines can fall in very different headings.
Frequently asked questions about HS Chapter 84
What Chapter 84 covers
Engines, turbines, boilers, pumps, furnaces, machinery and mechanical appliances.
Which products are classified under HS Chapter 84?
Common HS headings in Chapter 84 include: 8401 Nuclear reactors; 8471 Automatic data proc.; 8481 Taps, valves.
How do I find the import duty for HS Chapter 84 goods?
Determine the precise 6-digit HS subheading for your product, then check the MFN rate and any preferential rate for your destination market (e.g., China, the United States, the EU). 169e’s country tariff pages list rates per HS chapter.
What should I watch for when classifying HS Chapter 84 products?
Function and intended use are decisive; identical-looking machines can fall in very different headings.