# United States tariff lines under HS 8481.90

> The United States tariff splits HS 8481.90 (parts) into 8 national lines: 8481.90.10.00 (of copper), 8481.90.30.00 (of iron or steel), 8481.90.50.00 (of other materials), 8481.90.90.20 (valve bodies) and 4 others. The general (MFN) duty differs by line: 3% on 8481.90.10.00, 5% on 8481.90.30.00, 3% on 8481.90.50.00, free on 8481.90.90.20, free on 8481.90.90.40, free on 8481.90.90.60, free on 8481.90.90.81 and free on 8481.90.90.85.

Source: https://border.bot/countries/united-states/hs-codes/848190
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) / [8481.90](https://border.bot/countries/united-states/hs-codes/848190)

## Key facts

- HS subheading: [8481.90](https://border.bot/hs-codes/848190)
- National lines: 8
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 84: Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof

## United States lines under 8481.90

The United States tariff splits HS 8481.90 (parts) into 8 national lines: 8481.90.10.00 (of copper), 8481.90.30.00 (of iron or steel), 8481.90.50.00 (of other materials), 8481.90.90.20 (valve bodies) and 4 others.

The general (MFN) duty differs by line: 3% on 8481.90.10.00, 5% on 8481.90.30.00, 3% on 8481.90.50.00, free on 8481.90.90.20, free on 8481.90.90.40, free on 8481.90.90.60, free on 8481.90.90.81 and free on 8481.90.90.85.

- [8481.90.10.00](https://border.bot/countries/united-states/hs-codes/8481901000) Parts, Of hand operated and check appliances, Of copper. Duty (MFN): 3%
- [8481.90.30.00](https://border.bot/countries/united-states/hs-codes/8481903000) Parts, Of hand operated and check appliances, Of iron or steel. Duty (MFN): 5%
- [8481.90.50.00](https://border.bot/countries/united-states/hs-codes/8481905000) Parts, Of hand operated and check appliances, Of other materials. Duty (MFN): 3%
- [8481.90.90.20](https://border.bot/countries/united-states/hs-codes/8481909020) Parts, Other, Of valves of subheading 8481.20, Valve bodies. Duty (MFN): free
- [8481.90.90.40](https://border.bot/countries/united-states/hs-codes/8481909040) Parts, Other, Of valves of subheading 8481.20, Other. Duty (MFN): free
- [8481.90.90.60](https://border.bot/countries/united-states/hs-codes/8481909060) Parts, Other, Other, Valve bodies. Duty (MFN): free
- [8481.90.90.81](https://border.bot/countries/united-states/hs-codes/8481909081) Parts, Other, Other, Other, Steel forgings. Duty (MFN): free
- [8481.90.90.85](https://border.bot/countries/united-states/hs-codes/8481909085) Parts, Other, Other, Other, Other. Duty (MFN): free

## In other countries

No other national tariff on border.bot has live lines under 8481.90 yet.

- [The Harmonized System text for 8481.90](https://border.bot/hs-codes/848190)

- Previous subheading: [8481.80](https://border.bot/countries/united-states/hs-codes/848180) Other appliances
- Next subheading: [8482.10](https://border.bot/countries/united-states/hs-codes/848210) Ball bearings

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 8481.90?

The United States tariff splits HS 8481.90 (parts) into 8 national lines: 8481.90.10.00 (of copper), 8481.90.30.00 (of iron or steel), 8481.90.50.00 (of other materials), 8481.90.90.20 (valve bodies) and 4 others.

### What is the duty on HS 8481.90 in the United States?

The general (MFN) duty differs by line: 3% on 8481.90.10.00, 5% on 8481.90.30.00, 3% on 8481.90.50.00, free on 8481.90.90.20, free on 8481.90.90.40, free on 8481.90.90.60, free on 8481.90.90.81 and free on 8481.90.90.85.

## 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/848190.json