9111.90 - Parts:

This category, HTS 9111.90, encompasses all parts for watch cases, excluding complete watch cases themselves. These parts are essential components that, when assembled, form the casing that houses a watch movement. This includes, but is not limited to, bezels, case backs, stems, crowns, case bodies, and lugs that are intended for incorporation into a watch case.

It is crucial to distinguish this category from its sibling categories which cover complete watch cases. While siblings like 9111.10.00.00 (Cases of precious metal or of metal clad with precious metal), 9111.20 (Cases of base metal), and 9111.80.00.00 (Other cases) classify finished watch casings, this node specifically pertains to individual components that constitute a watch case. The classification at this level is determined by the nature of the individual part and its intended use within a watch case assembly.

The subcategories under 9111.90 further refine the classification based on the material of the watch case parts. Subcategory 9111.90.40.00 specifically addresses parts made of precious metal or metal clad with precious metal, demanding a higher level of scrutiny regarding material composition and valuation. The "Other" subcategory then captures all remaining parts for watch cases that do not fall into the precious metal classification, thereby ensuring a comprehensive classification structure for all components of watch cases.