8421.39.01
8-digit subheadingOther
This is a 8-digit subheading — a category, not a filing code. Pick the more specific code beneath it that best matches your goods; only a 10-digit statistical code can be used on a customs entry.
Duty rates
Duty-free under this rate column.
| Rate | Value and what it means |
|---|---|
| General rate (Column 1) | FreeColumn 1 general Applies to most trading partners — the standard "normal trade relations" rate. |
| Special rate (Column 1) | —Trade programs The country letters in parentheses are free trade agreement and preference programs. If your goods qualify under one of them, that rate replaces the general rate. |
| Column 2 rate | 35%Non-NTR Reserved for the small group of countries that do not have normal trade relations with the US (currently Cuba, North Korea, Russia and Belarus). Almost no importer uses this column — if you are shipping from anywhere else, ignore it. |
| Unit of quantity | — How CBP expects the quantity to be reported on the entry summary. |
Where this sits in the schedule
The tariff schedule is read top-down: each line inherits the wording of the categories above it.
Centrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus, for liquids or gases; parts thereof: > Filtering or purifying machinery and apparatus for gases:
Codes within Other
7 more specific lines fall under 8421.39.01.
- 8421.39.01.05For machine tools of headings 8456 through 8465, inclusive10-digit statistical codeCentrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus, for liquids or gases; parts thereof: > Filtering or purifying machinery and apparatus for gases: > Other > Dust collection and air purification equipment:
- 8421.39.01.15Other10-digit statistical codeCentrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus, for liquids or gases; parts thereof: > Filtering or purifying machinery and apparatus for gases: > Other > Dust collection and air purification equipment:
- 8421.39.01.20Electrostatic precipitators10-digit statistical codeCentrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus, for liquids or gases; parts thereof: > Filtering or purifying machinery and apparatus for gases: > Other > Other: > Industrial gas cleaning equipment:
- 8421.39.01.30Other10-digit statistical codeCentrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus, for liquids or gases; parts thereof: > Filtering or purifying machinery and apparatus for gases: > Other > Other: > Industrial gas cleaning equipment:
- 8421.39.01.40Gas separation equipment10-digit statistical codeCentrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus, for liquids or gases; parts thereof: > Filtering or purifying machinery and apparatus for gases: > Other > Other:
- 8421.39.01.60Pneumatic fluid power filters, rated at 550 kPa or greater10-digit statistical codeCentrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus, for liquids or gases; parts thereof: > Filtering or purifying machinery and apparatus for gases: > Other > Other: > Other:
- 8421.39.01.90Other10-digit statistical codeCentrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus, for liquids or gases; parts thereof: > Filtering or purifying machinery and apparatus for gases: > Other > Other: > Other:
Chapter 84: Machinery and Mechanical Appliances; Parts Thereof
Browse every code in this chapter to compare neighbouring classifications.
View Chapter 84Source: USITC Harmonized Tariff Schedule, 2026 Basic Edition, Revision 16. Rate text is reproduced verbatim from the official export; category paths and duty estimates are derived.
Data loaded August 18, 2026.Check this chapter on hts.usitc.govReport an error with this codeHow this data is built