5205.13 - Exceeding 43 nm but not exceeding 52 nm:

This HTS category, 5205.13, specifically classifies single yarns of uncombed cotton fibers that are not intended for retail sale and contain 85 percent or more cotton by weight. The defining characteristic for this subcategory is its yarn count, which falls within a precise range: exceeding 43 but not exceeding 52 nautical miles (nm) per single yarn. This measure relates to the fineness or thickness of the yarn.

Distinguishing 5205.13 from its sibling categories is crucial for accurate classification. For instance, 5205.11 covers yarns with a count not exceeding 14 nm, while 5205.12 classifies yarns from exceeding 14 nm up to 43 nm. Conversely, 5205.14 and 5205.15 cover finer yarns with counts exceeding 52 nm and 80 nm respectively. Therefore, the "exceeding 43 nm but not exceeding 52 nm" range is the sole determinant for items falling under 5205.13 at this level.

Within 5205.13, further subdivisions are made based on the yarn's processing. The subcategories 5205.13.10.00 and 5205.13.20.00 differentiate between "Unbleached, not mercerized" yarns and "Other" types. This distinction allows for more granular tracking and potential variations in duties or regulations based on whether the cotton yarn has undergone bleaching or mercerization, in addition to its specified count and lack of retail packaging.