5205.43.00 - Exceeding 43 nm but not exceeding 52 nm per single yarn

This HTS subcategory, 5205.43.00, specifically classifies multiple (folded) or cabled yarns of combed cotton fibers where the single yarn forming the cable has a linear density exceeding 43 but not exceeding 52 nanometers (nm) per single yarn. This means the yarn is composed of two or more single strands of combed cotton twisted together, and the thickness of each individual strand falls within this defined range. The "not put up for retail sale" designation indicates these yarns are intended for further industrial processing.

To differentiate this category from its siblings, the critical factor is the fineness of the single yarn. 5205.41.00 covers single yarns not exceeding 14 nm, while 5205.42.00 encompasses single yarns from over 14 nm up to 43 nm. Conversely, 5205.44.00 includes multiple yarns where the single yarn exceeds 52 nm but does not exceed 80 nm. Therefore, 5205.43.00 occupies a precise middle ground based on the measurement of the individual component strands.

Within this classification, the yarns are further subdivided into ring-spun types. The subcategory 5205.43.00.90 represents "Other" ring-spun yarns that meet the specified fineness criteria. The ring-spinning process imparts a particular strength and twist structure to the yarn, and this distinction is important for specific manufacturing applications and subsequent trade classifications.