# United States tariff lines under HS 8405.10

> The United States tariff splits HS 8405.10 (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) into 1 national line: 8405.10.00.00 (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). Every United States line under 8405.10 is free of general (MFN) duty.

Source: https://border.bot/countries/united-states/hs-codes/840510
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) / [8405.10](https://border.bot/countries/united-states/hs-codes/840510)

## Key facts

- HS subheading: [8405.10](https://border.bot/hs-codes/840510)
- Duty (MFN): Free
- 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 8405.10

The United States tariff splits HS 8405.10 (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) into 1 national line: 8405.10.00.00 (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).

Every United States line under 8405.10 is free of general (MFN) duty.

- [8405.10.00.00](https://border.bot/countries/united-states/hs-codes/8405100000) 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. Duty (MFN): free

## In other countries

No other national tariff on border.bot has live lines under 8405.10 yet.

- [The Harmonized System text for 8405.10](https://border.bot/hs-codes/840510)

- Previous subheading: [8404.90](https://border.bot/countries/united-states/hs-codes/840490) Auxiliary plant for use with boilers of heading 8402 or 8403 (for example, economizers, super-heaters, soot removers, gas recoverers); condensers for steam or other vapor power units; parts thereof
- Next 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

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 8405.10?

The United States tariff splits HS 8405.10 (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) into 1 national line: 8405.10.00.00 (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).

### What is the duty on HS 8405.10 in the United States?

Every United States line under 8405.10 is free of general (MFN) duty.

## 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/840510.json