8302.10.90.30 - Suitable for interior and exterior doors (except garage, overhead or sliding doors)

This HTS category, 8302.10.90.30, specifically covers hinges and their parts that are designed for use on interior and exterior doors. This includes a wide range of applications such as residential and commercial doors, but explicitly excludes those intended for garage doors, overhead doors (like sectional or rolling doors), and sliding doors, which have distinct classification requirements. The primary material for these articles is base metal, aligning with the broader scope of Chapter 83.

It is important to distinguish this category from its sibling, 8302.10.90.60, which covers hinges suitable for furniture and cabinets. While both are base metal hinges, the intended application is the key differentiator. Category .30 is for architectural door hardware, whereas .60 is for smaller, lighter-duty hinges found on dressers, cabinets, and other furniture items. Another sibling category, 8302.10.90.90, serves as a residual category for any other hinges not fitting the more specific descriptions.

As this is a leaf node within the HTS structure, there are no further subcategories to introduce. Classification within 8302.10.90.30 relies on identifying the hinge's design and intended purpose as being for standard interior or exterior doors, excluding the specialized door types mentioned in its description.