5101.21.40 - Other

This HTS category, HTS Code 5101.21.40, specifically covers "Other" wool that has been degreased but not carbonized, and falls under the designation of shorn wool. This means the wool has undergone a process to remove grease and impurities but has not been treated with chemicals to remove brittle fiber ends. It further refines the classification by excluding wool that has been processed beyond this basic degreased state.

Distinguishing this category from its sibling, "Unimproved wool; other wool, not finer than 46s," is crucial. While both are degreased and not carbonized shorn wool, this "Other" category is intended for wool that does not fit the specific criteria of the sibling. The sibling focuses on unimproved wool or wool with a particular fineness (not finer than 46s), suggesting this "Other" category encompasses degreased shorn wool that may differ in its "improved" status or fineness, as long as it hasn't undergone further processing.

The subcategories within HTS 5101.21.40 further refine the classification based on the fineness of the wool. The distinction between "Not finer than 58s" (5101.21.40.30) and "Finer than 58s" (5101.21.40.60) is based on the wool's micron count or equivalent measurement, a key determinant in its suitability for various textile applications. This precise measurement allows for accurate differentiation of wool types with distinct end-uses and market values.