5101.21.35.00 - Other wool, finer than 44s

This HTS category, 5101.21.35.00, specifically encompasses "other wool, finer than 44s," which has undergone degreasing but has not been carbonized. This classification applies to shorn wool that has been processed to remove natural grease and impurities, but remains in a relatively raw state, not yet subjected to further fiber preparation. The key determinant for inclusion is the fineness of the wool, measured in "counts" or "s" (the number of hanks of yarn, each 560 yards long, that can be spun from one pound of wool).

This category is distinguished from its siblings based on precise fineness thresholds. For instance, 5101.21.15.00 covers unimproved wool or other wool not finer than 40s, while 5101.21.30.00 is for wool finer than 40s but not exceeding 44s. Therefore, 5101.21.35.00 is exclusively for wool with a fineness exceeding 44s, representing a finer grade of animal hair within the degreased, shorn wool segment.

As this is a leaf node within the HTS structure, there are no further subcategories. Classification into this specific code relies solely on the stated fineness criteria and the preceding processing steps of degreasing and being shorn wool, without any subsequent carbonization or further mechanical preparation. This ensures that only wool meeting these precise technical specifications for fineness and processing stage is accurately categorized.