5403.10.30 - Single yarn

This HTS category, 5403.10.30, specifically classifies single yarns of artificial filament, not intended for retail sale, that possess high tenacity and are made from viscose rayon. These yarns are characterized by their strength and are derived from manufactured filaments, as opposed to natural fibers. The key differentiator here is that these are single, untwisted or lightly twisted filaments, forming a singular strand of yarn.

It is crucial to distinguish this category from its sibling, 5403.10.60.00, which covers multiple (folded) or cabled yarns. While both fall under high tenacity yarn of viscose rayon, the distinction lies in the construction of the yarn. 5403.10.30 exclusively includes single yarns, meaning each yarn strand consists of a single filament or multiple untwisted filaments. In contrast, 5403.10.60.00 pertains to yarns where two or more single yarns have been twisted together (folded) or further processed into a cable structure.

Within this category, further subclassification is made based on the yarn's twist. 5403.10.30.20 encompasses monofilament yarns (which are a single filament of sufficient fineness and straightness to be used as yarn) and multifilament yarns with minimal twist, specifically less than 5 turns per meter. This minimal twist is often insufficient to impart significant cohesion to multiple filaments, thus keeping them classified as single yarns. Conversely, 5403.10.30.40 addresses multifilament yarns where the twist is 5 turns or more per meter. This increased twist binds the individual filaments together more effectively, creating a more cohesive single yarn structure, and is a critical factor for classification at this more granular level.