5509 - Yarn (other than sewing thread) of synthetic staple fibers, not put up for retail sale:
Sub-classifications
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5509 1100 00
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5509 1200 00
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Overview
This HTS category, 5509, encompasses a broad range of yarns specifically manufactured from synthetic staple fibers. These yarns are intended for textile production and are not presented in final retail packaging, such as skeins or small balls for direct consumer use. The key defining characteristic is the material composition: the yarns must be made from staple fibers, meaning short, discontinuous lengths of synthetic material, rather than continuous filament. This distinction is crucial for classification, as yarns made from continuous synthetic filaments fall under different HTS headings.
In contrast to sibling categories that might cover live animals, for example, HTS 5509 exclusively deals with manufactured textile materials. Within the broader scope of Chapter 55, which addresses man-made staple fibers, this heading focuses on the processed form of these fibers into yarn. This differentiates it from headings that might cover the raw staple fibers themselves or finished textile articles.
The subcategories within 5509 provide further refinement based on the specific type of synthetic staple fiber and its proportion within the yarn. These subdivisions allow for precise classification based on whether the yarn contains a high percentage (85% or more) of specific synthetic fibers like nylon, polyester, or acrylic/modacrylic, or if it is an "other" yarn where synthetic staple fibers are still dominant but may be a blend or a different type. This detailed breakdown is essential for accurate duty assessment and trade statistics.