8479.90 - Parts:

This HTS category, 8479.90, is designated for "Parts" of machinery and mechanical appliances that have individual functions not specifically covered elsewhere in Chapter 84. This broad classification encompasses components, accessories, and elements essential for the operation, repair, or maintenance of machines classified under heading 8479. The key criterion for inclusion here is that the part must be designed for use with a machine that itself falls within the residual category of 8479.

While sibling categories under heading 8479.10 through 8479.89.90 detail specific types of finished machinery (such as public works machinery, oil extraction machinery, or industrial robots), 8479.90 focuses exclusively on the *parts* of these machines. Therefore, if an item is a component and is specifically intended for a machine falling within 8479 but not assigned to a more specific parts classification within that heading, it will likely be classified here.

The subcategories within 8479.90 further refine the classification of these parts. For instance, 8479.90.41.00 specifically addresses parts belonging to certain articles of subheading 8479.89.10 or 8479.89.70, indicating a need for more granular detail based on the originating machinery. The remaining subcategories, such as those for trash compactors or "Other" parts, allow for further breakdown based on the specific function or type of the part, ensuring accurate customs reporting.