Chapter 84: Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof

HTS heading 8401: Nuclear reactors; fuel elements (cartridges), non-irradiated, for nuclear reactors; machinery and apparatus for isotopic separation; parts…

5 numbered lines under heading 8401, including 4 10-digit statistical lines. The first six digits are the international HS subheading; the general column is the normal US duty rate.

HTS heading 8401
HTS codeDescriptionUnitGeneralSpecialColumn 2
8401Nuclear reactors; fuel elements (cartridges), non-irradiated, for nuclear reactors; machinery and apparatus for isotopic separation; parts thereof:
8401.10.00.00Nuclear reactorst3.3%Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)45%
8401.20.00.00Machinery and apparatus for isotopic separation, and parts thereoft2.6%Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)35%
8401.30.00.00Fuel elements (cartridges), non-irradiated, and parts thereofkg3.3%Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)45%
8401.40.00.00Parts of nuclear reactorst3.3%Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)45%

Statistical (10-digit) lines without a rate use the rate of the 8-digit line above them. Additional duties such as Section 301 and Section 232 may apply; check them with the tariff checker.

Source: Harmonized Tariff Schedule of the United States, 2026 HTS Revision 20 (effective 2026-09-28), U.S. International Trade Commission (hts.usitc.gov), imported 2026-10-07. Reference only; not legal or customs advice or a binding classification. Additional duties under Chapter 99 may apply. ShipWave is not affiliated with the USITC or U.S. Customs and Border Protection.