5402.45.90.30 - Other

This HTS category, 5402.45.90.30, specifically covers "Other" synthetic filament yarn, not put up for retail sale, that falls within the broader group of single, untwisted or low-twist yarns of nylon or other polyamides. The defining characteristic of this subcategory is that the yarn is neither a partially oriented multifilament yarn (classified under 5402.45.90.10) nor a monofilament, nor a multifilament with a twist of less than 5 turns per meter. Therefore, it encompasses single yarns of nylon or other polyamides that have a twist exceeding 50 turns per meter, but are not sewing thread and are not presented for retail sale.

The distinction from its sibling category, 5402.45.90.10 (Multifilament, partially oriented), is crucial. Partially oriented yarns typically undergo a process that imparts some degree of molecular orientation, affecting their tensile strength and elasticity, and are often used directly in subsequent manufacturing processes. This category, conversely, includes yarns that have undergone further twisting beyond the initial stages of yarn formation and orientation, making them suitable for different textile applications.

As this node represents a leaf category within the HTS, there are no further subcategories. Classification into this specific code relies on the precise definition of yarn characteristics, specifically the absence of partial orientation, the absence of monofilament structure, and the presence of a twist exceeding 50 turns per meter for single nylon or polyamide filament yarns not intended for retail sale. Examples might include yarns specifically prepared for weaving or knitting where a higher twist is required for yarn stability or aesthetic properties.