5402.47.10 - Wholly of polyester, measuring not less than 75 decitex but not more than 80 decitex, and having 24 filaments per yarn

This HTS classification, 5402.47.10, specifically covers polyester filament yarn that is wholly composed of polyester. The yarn must fall within a defined decitex range, measuring not less than 75 decitex but not more than 80 decitex. A crucial distinguishing characteristic is the filament count, which must be exactly 24 filaments per yarn. This category falls under "Other yarn, single, untwisted or with a twist not exceeding 50 turns/m" and is a subcategory of "Other, of polyesters."

Within the broader category of polyester filament yarn, this specific classification is differentiated from its sibling, 5402.47.90, by its precise filament count and decitex range. While 5402.47.90 would encompass other types of single polyester yarns meeting the broader criteria but not meeting the specific filament count of 24, 5402.47.10 is reserved for those meeting all the detailed specifications.

The subcategories for 5402.47.10 further refine the classification based on the yarn's twist. 5402.47.10.20 is designated for untwisted yarn or yarn with a twist of less than 5 turns per meter. Conversely, 5402.47.10.40 is for yarn exhibiting a twist of 5 turns or more per meter. This distinction is important for trade purposes, as yarn processing and end-use can be influenced by these twist levels.