8302.10.90 - Other

This HTS category, 8302.10.90, encompasses a broad range of hinges and their parts, specifically those not explicitly enumerated in preceding subheadings. It serves as a residual category for base metal hinges that do not fall under the more specific classifications. The common thread among these items is their construction from base metals such as iron, steel, aluminum, or zinc, and their intended function as pivot points for opening and closing various structures.

Distinguishing this category from its sibling requires careful consideration of material composition. While the sibling category focuses on hinges made specifically "Of iron or steel, of aluminum or of zinc," this category is a broader grouping that may implicitly include hinges made from other base metals or those where the primary material is not exclusively iron, steel, aluminum, or zinc, provided they meet the general criteria of Chapter 83. However, it is crucial to note that the parent heading broadly covers base metal fittings, and specific exclusions or inclusions related to material may be detailed in other HTS provisions.

The subcategories within 8302.10.90 provide further refinement for classification based on application. These include hinges specifically designated for interior and exterior doors (excluding specialized types like garage or sliding doors), and those designed for furniture and cabinets. The residual category, "Other," captures any remaining hinges that do not fit these more specific functional sub-classifications. This tiered approach ensures accurate tariff application by recognizing the diverse uses and designs of base metal hinges.