# HS code 8406.10: Turbines for marine propulsion

> HS code 8406.10 covers turbines for marine propulsion. It sits in heading 84.06 (steam turbines and other vapour turbines) in chapter 84 (nuclear reactors, boilers, machinery and mechanical appliances; parts thereof). Other goods of heading 84.06 are classified under 8406.81 (other turbines, of an output exceeding 40 MW), 8406.82 (other turbines, of an output not exceeding 40 MW) or 8406.90 (parts). National tariff lines under 8406.10 are live on border.bot for the United States (2 lines, also used by 1 other country).

Source: https://border.bot/hs-codes/840610
Last updated: 11 October 2026

[HS codes](https://border.bot/hs-codes) / [Chapter 84](https://border.bot/hs-codes/84) / [84.06](https://border.bot/hs-codes/8406) / [8406.10](https://border.bot/hs-codes/840610)

## Key facts

- HS code: 8406.10
- Covers: Turbines for marine propulsion
- Heading: [84.06: Steam turbines and other vapour turbines](https://border.bot/hs-codes/8406)
- Chapter: [84: Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof](https://border.bot/hs-codes/84)
- Edition: HS2022
- Duty in the United States: [See its 2 lines](https://border.bot/countries/united-states/hs-codes/840610)

## What this code covers

HS code 8406.10 covers turbines for marine propulsion.

The legal text of the subheading is “Turbines for marine propulsion”, in HS2022.

## What it doesn’t cover

Other goods of heading 84.06 are classified under 8406.81 (other turbines, of an output exceeding 40 MW), 8406.82 (other turbines, of an output not exceeding 40 MW) or 8406.90 (parts).

- [8406.81](https://border.bot/hs-codes/840681) Other turbines: Of an output exceeding 40 MW
- [8406.82](https://border.bot/hs-codes/840682) Other turbines: Of an output not exceeding 40 MW
- [8406.90](https://border.bot/hs-codes/840690) Parts

## How it is structured

8406.10 is a six-digit subheading. Its first two digits, 84, are the chapter; the first four, 8406, are heading 84.06; the last two, 10, identify the subheading within the heading.

Countries add their own digits after these six for their national tariff lines.

- Chapter 84: Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof
- Heading 84.06: Steam turbines and other vapour turbines
- Subheading 8406.10: Turbines for marine propulsion

## In other countries

National tariff lines under 8406.10 are live on border.bot for the United States (2 lines, also used by 1 other country).

- [United States](https://border.bot/countries/united-states/hs-codes/840610): 2 lines, used by 1 other country

- Previous subheading: [8405.90](https://border.bot/hs-codes/840590) Parts
- Next subheading: [8406.81](https://border.bot/hs-codes/840681) Other turbines: Of an output exceeding 40 MW

## Frequently asked questions

### What does HS code 8406.10 cover?

HS code 8406.10 covers turbines for marine propulsion.

### Which heading and chapter is HS code 8406.10 in?

HS code 8406.10 is in heading 84.06 (steam turbines and other vapour turbines) in chapter 84 (nuclear reactors, boilers, machinery and mechanical appliances; parts thereof).

### Where are goods of heading 84.06 classified when 8406.10 doesn’t fit?

Other goods of heading 84.06 are classified under 8406.81 (other turbines, of an output exceeding 40 MW), 8406.82 (other turbines, of an output not exceeding 40 MW) or 8406.90 (parts).

### Which countries’ tariffs list national lines under HS code 8406.10?

National tariff lines under 8406.10 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.

Machine-readable: https://border.bot/hs-codes/840610.json