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GOODS ACROSS BORDERS

HS HEADING 8401

Nuclear reactors; fuel elements (cartridges), non-irradiated, for nuclear reactors, machinery and apparatus for isotopic separation

In plain English

This category includes nuclear reactors, fuel elements that have not been used in reactors, and machinery designed to separate isotopes. The items are grouped by their specific function or status. One group covers the reactors themselves along with their components. Another group addresses the equipment for separating isotopes and its parts. A third group is dedicated solely to the unused fuel cartridges.

PARAPHRASE OF THE OFFICIAL HS 2022 TEXTS BELOW — NOT LEGAL ADVICE

6-digit subheadings (4)

Official HS 2022 subheading texts. National tariff schedules subdivide these further (8-10 digit lines) and set the actual duty rates.

8401.10

Nuclear reactors

8401.20

Machinery and apparatus; for isotopic separation, and parts thereof

8401.30

Fuel elements (cartridges); non-irradiated

8401.40

Nuclear reactors; parts thereof

Chapter 84 classification notes

One of the largest chapters by trade value. Many IT products duty-free under the ITA (Information Technology Agreement). Dual-use export controls apply to certain machinery. Parts often classified under the same heading as the complete machine.

Frequent misclassification in this chapter

Many importers confuse Chapter 84 (mechanical) and Chapter 85 (electrical). A device with both elements usually classifies by principal function. Computer peripherals may classify separately from the computer itself.

Classification certainty

The 6-digit level shown here is the internationally harmonised layer. Duty rates attach to national 8-10 digit tariff lines, which differ by country — use the duty calculator for lane estimates. For binding certainty, request a ruling from the destination customs authority.

Binding tariff ruling database

Other headings in Chapter 84

RULES5,339COUNTRIES85ITEMS111CARRIERS28GUIDES46UNIQUE SOURCES645LATEST VERIFICATION2026-07-26MethodologyChangelog