5101.21.40.60 - Finer than 58s

This HTS category, 5101.21.40.60, specifically covers shorn wool that has been degreased but not carbonized and is finer than 58s. This signifies wool with a very fine fiber diameter, typically associated with higher quality Merino wools or similar fine animal hairs. The "not processed in any manner beyond the degreased condition" part of the parent context indicates that these wools have undergone only the initial cleaning to remove grease and dirt, without further carding or combing, and are not treated to remove their natural crimp or hair structure.

The key distinction of this category from its sibling, 5101.21.40.30, lies in the fineness of the wool. While both are degreased, not carbonized, shorn wool, this specific classification applies only to wool fibers with a fineness exceeding the 58s count. This fineness is a critical criterion for differentiation, impacting the potential end-use and value of the wool.

As this is a leaf node in the HTS structure, there are no further subcategories. Therefore, classification within 5101.21.40.60 is determined solely by the presence of degreased, not carbonized, shorn wool that meets the "finer than 58s" criterion. This means that any wool meeting these precise physical and processing conditions, regardless of its origin breed (provided it is animal hair of Chapter 51), would fall under this code.