5402.49 - Other:

This category, HTS Code 5402.49, covers single synthetic filament yarns, not put up for retail sale, that are either untwisted or have a twist not exceeding 50 turns per meter. Crucially, these yarns are neither elastomeric (classified under 5402.44) nor specifically of nylon or polyesters (with subcategories 5402.45, 5402.46, and 5402.47). It also excludes yarns of polypropylene (5402.48). This residual category captures a broad range of synthetic filament yarns meeting the general specifications but not fitting into more precisely defined sibling groups.

The distinction lies in the material composition. While other subheadings within 5402.4 specify nylon, polyester, or polypropylene, this category is for synthetic filament yarns made from other man-made materials, such as acrylic, modacrylic, or other synthetic polymers. The yarn must be presented in a single strand and have a low twist, or no twist at all, with the intention of further processing rather than direct consumer sale.

Within this category, further subdivisions exist to refine classification based on specific characteristics and intended uses. For instance, HTS Code 5402.49.11.00 details a specific type of colored multifilament yarn made of modacrylic, with a very low twist and specific decitex requirements, which is exclusively designated for use in the manufacture of wigs for dolls. The broader category, 5402.49.91, encompasses all other synthetic filament yarns that fall under the 5402.49 umbrella but do not meet the stringent criteria for the specialized subheading.