# United States tariff lines under HS 8406.10

> The United States tariff splits HS 8406.10 (turbines for marine propulsion) into 2 national lines: 8406.10.10.00 (steam turbines) and 8406.10.90.00 (other). The general (MFN) duty differs by line: 6.7% on 8406.10.10.00 and free on 8406.10.90.00.

Source: https://border.bot/countries/united-states/hs-codes/840610
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 84](https://border.bot/countries/united-states/hs-codes/84) / [8406.10](https://border.bot/countries/united-states/hs-codes/840610)

## Key facts

- HS subheading: [8406.10](https://border.bot/hs-codes/840610)
- National lines: 2
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 84: Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof

## United States lines under 8406.10

The United States tariff splits HS 8406.10 (turbines for marine propulsion) into 2 national lines: 8406.10.10.00 (steam turbines) and 8406.10.90.00 (other).

The general (MFN) duty differs by line: 6.7% on 8406.10.10.00 and free on 8406.10.90.00.

- [8406.10.10.00](https://border.bot/countries/united-states/hs-codes/8406101000) Turbines for marine propulsion, Steam turbines. Duty (MFN): 6.7%
- [8406.10.90.00](https://border.bot/countries/united-states/hs-codes/8406109000) Turbines for marine propulsion, Other. Duty (MFN): free

## In other countries

No other national tariff on border.bot has live lines under 8406.10 yet.

- [The Harmonized System text for 8406.10](https://border.bot/hs-codes/840610)

- Previous subheading: [8405.90](https://border.bot/countries/united-states/hs-codes/840590) Producer gas or water gas generators, with or without their purifiers; acetylene gas generators and similar water process gas generators, with or without their purifiers; parts thereof
- Next subheading: [8406.81](https://border.bot/countries/united-states/hs-codes/840681) Of an output exceeding 40 MW

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 8406.10?

The United States tariff splits HS 8406.10 (turbines for marine propulsion) into 2 national lines: 8406.10.10.00 (steam turbines) and 8406.10.90.00 (other).

### What is the duty on HS 8406.10 in the United States?

The general (MFN) duty differs by line: 6.7% on 8406.10.10.00 and free on 8406.10.90.00.

## Sources and updates

The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

This page was last updated on 9 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.

Official source files:

- https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false

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