# United States tariff lines under HS 8401.20

> The United States tariff splits HS 8401.20 (machinery and apparatus for isotopic separation, and parts thereof) into 1 national line: 8401.20.00.00 (machinery and apparatus for isotopic separation, and parts thereof). The general (MFN) duty is 2.6% on this line.

Source: https://border.bot/countries/united-states/hs-codes/840120
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) / [8401.20](https://border.bot/countries/united-states/hs-codes/840120)

## Key facts

- HS subheading: [8401.20](https://border.bot/hs-codes/840120)
- Duty (MFN): 2.6%
- National lines: 1
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 84: Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof

## United States lines under 8401.20

The United States tariff splits HS 8401.20 (machinery and apparatus for isotopic separation, and parts thereof) into 1 national line: 8401.20.00.00 (machinery and apparatus for isotopic separation, and parts thereof).

The general (MFN) duty is 2.6% on this line.

- [8401.20.00.00](https://border.bot/countries/united-states/hs-codes/8401200000) Machinery and apparatus for isotopic separation, and parts thereof. Duty (MFN): 2.6%

## In other countries

No other national tariff on border.bot has live lines under 8401.20 yet.

- [The Harmonized System text for 8401.20](https://border.bot/hs-codes/840120)

- Previous subheading: [8401.10](https://border.bot/countries/united-states/hs-codes/840110) Nuclear reactors; fuel elements (cartridges), non-irradiated, for nuclear reactors; machinery and apparatus for isotopic separation; parts thereof
- Next subheading: [8401.30](https://border.bot/countries/united-states/hs-codes/840130) Nuclear reactors; fuel elements (cartridges), non-irradiated, for nuclear reactors; machinery and apparatus for isotopic separation; parts thereof

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 8401.20?

The United States tariff splits HS 8401.20 (machinery and apparatus for isotopic separation, and parts thereof) into 1 national line: 8401.20.00.00 (machinery and apparatus for isotopic separation, and parts thereof).

### What is the duty on HS 8401.20 in the United States?

The general (MFN) duty is 2.6% on this line.

## 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/840120.json