5402.45.90.10 - Multifilament, partially oriented

This HTS category, 5402.45.90.10, specifically classifies multifilament yarns made from synthetic materials, such as nylon or other polyamides. These yarns are characterized as "partially oriented," meaning the filaments have undergone some degree of stretching but not to the full extent of highly oriented yarns. Crucially, this classification applies to yarns that are not put up for retail sale and are intended for industrial or manufacturing use. The defining physical characteristic for this subdivision is that the yarn is either untwisted or possesses a very low twist, specifically not exceeding 5 turns per meter.

The distinction between this subcategory and its sibling, 5402.45.90.30 ("Other"), lies in the specific construction of the yarn. While both fall under "Other, of nylon or other polyamides" and "Other" within the broader synthetic filament yarn context, 5402.45.90.10 is reserved for multifilament yarns with a defined low twist or no twist. The sibling category, 5402.45.90.30, would encompass other constructions within the "Other" designation that do not meet the precise low-twist or untwisted multifilament criteria of 5402.45.90.10.

As this is a leaf node in the HTS classification, there are no further subcategories. Therefore, precise adherence to the description and accompanying notes is critical for correct classification. Examples of goods falling under this classification would include partially oriented multifilament nylon yarns used in the production of textiles, such as those for industrial fabrics, ropes, or certain types of apparel, where the specific low-twist characteristic is a key manufacturing attribute.