</>Build with Tariff Intelligence|Programmatic access to tariff calculations and HS code classification.Explore Developer Resources →

Reactor Core Shroud from Mexico

A stainless steel cylindrical assembly surrounding the nuclear fuel assemblies in boiling water reactors (BWRs), directing coolant flow and providing radiation shielding. Classified under HTS 8401.40.00.00 as it is a specialized internal structural component unique to nuclear reactor design.

Duty Rate — Mexico → United States

18.3%

Rate breakdown

9903.82.1015%Except as provided for in headings 9903.82.12, 9903.82.17 and 9903.85.68, derivative aluminum and steel articles with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 15 percent, as provided for in subdivision (f) of U.S. note 16 to this subchapter
9903.03.060%Articles of aluminum, of steel, or of copper or derivative aluminum or steel articles; passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans, and cargo vans) and light trucks; parts of passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans, and cargo vans) and light trucks; medium- and heavy-duty vehicles; parts of medium- and heavy-duty vehicles; wood products; and semiconductor articles, of any country, as provided in subdivision (aa)(v) of U.S. note 2 to this subchapter

Import Tips

Provide detailed engineering drawings showing reactor-specific tolerances and neutron flux resistance

Ensure radioactive contamination-free certification; use specialized nuclear transport containers

Document compliance with NRC Appendix A to 10 CFR Part 50 quality assurance criteria