5402.53.00.00 - Of polypropylene (606)

HTS Code 5402.53.00.00 specifically classifies synthetic filament yarn, not intended for retail sale and excluding sewing thread, that is composed of polypropylene. This category falls under other yarn types within the broader classification of synthetic filament yarn, characterized by a single strand with a twist exceeding 50 turns per meter.

This classification distinguishes itself from its siblings based on the specific polymer used. For instance, HTS code 5402.51.00.00 covers yarns of nylon or other polyamides, while 5402.52 pertains to polyesters. The "Other" category (5402.59.01.00) is reserved for yarns not otherwise specified by material within this group. Therefore, the definitive criterion for classification under 5402.53.00.00 is the yarn's composition of polypropylene.

As this is a leaf node within the HTS structure, there are no further subcategories to explore. The classification at this level is definitive for single filament yarns of polypropylene with a twist exceeding 50 turns per meter, not put up for retail sale. Examples of such goods would include bulk yarns used in industrial manufacturing processes for textiles, carpets, or other fabric-based products where the yarn is the primary component and is not packaged for direct consumer purchase.