7604.29 - Other:

This HTS category, 7604.29, encompasses aluminum bars, rods, and profiles that are not hollow and are not specifically classified under other headings within Chapter 76. It primarily includes solid bars and rods, as well as solid profiles. The key characteristic for inclusion here is that the article is formed from aluminum alloys and possesses a cross-sectional shape intended for specific applications, but does not possess a hollow interior.

Distinguishing this category from its sibling, 7604.21, is crucial. While 7604.21 specifically covers hollow profiles of aluminum alloys, this category, 7604.29, is reserved for those profiles that are solid. Therefore, if an aluminum alloy profile has an open interior or cavity, it would fall under 7604.21; conversely, a solid profile of the same material would be classified here.

Further subdivision within this category addresses the distinction between bars/rods and other profiles. The subcategory 7604.29.10 specifically isolates "other profiles" which are distinct from simple bars and rods due to their more complex cross-sectional shapes. The subsequent grouping focuses on bars and rods, which are generally characterized by simpler, uniform cross-sections. This hierarchical breakdown allows for granular classification based on the article's form and intended use.