9903.81.86 - Derivative steel articles of Mexico enumerated in U.S. note 16 to this subchapter, where the steel was melted and poured in a country other than the United States, Mexico or Canada

This HTS category, 9903.81.86, specifically classifies derivative steel articles originating from Mexico. The defining characteristic of these articles is that the steel used in their manufacture must have been melted and poured in a country other than the United States, Mexico, or Canada. This provision falls under temporary legislation and additional import restrictions, indicating it's subject to specific trade agreements and policy measures.

To distinguish this category from its siblings, it's crucial to understand that other HTS codes within Chapter 99 or even earlier chapters may cover steel articles. However, 9903.81.86 is unique in its stringent origin requirements related to the melting and pouring of the raw steel. Unlike general steel product classifications (e.g., within Chapters 72 or 73), this category focuses on "derivative" articles and imposes a specific geographical limitation on the steel's primary processing, excluding the United States, Mexico, and Canada as eligible sources for that initial step.

As this is a leaf node within the HTS structure, there are no further subdivisions under 9903.81.86. Classification into this code depends solely on meeting the specified origin criteria for the steel content of derivative articles imported from Mexico. Importers must carefully trace the provenance of the steel used in the manufacture of the article to ensure accurate classification and compliance with U.S. trade regulations.