5402.45.90.40 - Multifilament, with twist of 5 turns or more per meter (606)

This HTS category, 5402.45.90.40, specifically covers multifilament yarns made from nylon or other polyamides. A key characteristic defining this classification is the yarn's twist, which must be 5 turns or more per meter. These yarns are not intended for retail sale and are typically used as industrial materials or components in further manufacturing processes.

This classification is distinguished from its sibling category, 5402.45.90.30, by the yarn's twist. While both cover other synthetic yarns of nylon or other polyamides, this node exclusively includes multifilament yarns with a twist exceeding 5 turns per meter. The sibling category, in contrast, encompasses monofilament yarns or multifilament yarns that are untwisted or have a twist of less than 5 turns per meter. The parent category's scope of "other yarn, single, untwisted or with a twist not exceeding 50 turns/m" helps frame this distinction, as this node falls within the higher twist range of that broader group.

As this is a leaf node within the HTS structure, there are no further subcategories. Classification at this level relies entirely on meeting the defined criteria of being a multifilament yarn of nylon or other polyamides, not put up for retail sale, and possessing a twist of 5 turns or more per meter. Examples of such yarns include those used in the production of industrial fabrics, ropes, nets, and certain types of performance apparel where higher twist contributes to specific yarn properties like strength and abrasion resistance.