5402.39 - Other:

HTS Code 5402.39 encompasses textured synthetic filament yarns, not intended for retail sale, that do not fall under more specific classifications based on material. This category serves as a residual for textured synthetic filament yarns when the exact type of synthetic fiber is not otherwise detailed in the preceding subheadings of 5402.3. It includes yarns manufactured from various synthetic polymers other than those explicitly designated in codes 5402.31 through 5402.34, such as those made from nylon, polyamide, polyester, or polypropylene.

This category is distinct from its siblings, 5402.31, 5402.32, 5402.33, and 5402.34, which specifically classify textured synthetic filament yarns of nylon or other polyamides (distinguished by decitex) and polyesters, and polypropylene, respectively. HTS 5402.39 is therefore applied to textured yarns derived from other synthetic filament-forming materials not otherwise enumerated.

Within HTS 5402.39, further distinctions are made based on the construction of the yarn. The subcategory 5402.39.31 applies to single yarns, meaning the yarn consists of a single strand of textured filament. In contrast, 5402.39.61 covers multiple (folded) or cabled yarns, which are formed by combining two or more single yarns, or by twisting multiple single yarns together, to create a thicker and often more durable yarn. These subdivisions allow for precise classification based on the yarn's construction.