5506.10.00.00 - Of nylon or other polyamides

This HTS category, 5506.10.00.00, specifically classifies synthetic staple fibers that are made from nylon or other polyamides. These fibers, regardless of whether they have been carded, combed, or otherwise processed to prepare them for spinning into yarn, fall under this heading if their primary material composition is nylon or a polyamide. Examples include staple fibers intended for the production of nylon fabrics, threads, or non-woven materials.

It is crucial to distinguish this category from its siblings. While all fall under the broader heading of "Synthetic staple fibers, carded, combed or otherwise processed for spinning," this particular subcategory is exclusively for nylon or polyamide-based fibers. For instance, HTS code 5506.20.00.00 covers similar staple fibers, but they are composed of polyesters, not nylon. Similarly, categories for acrylic, modacrylic, and polypropylene staple fibers are distinct based on their respective polymer compositions.

As this is a leaf node within the HTS structure, there are no further subcategories. Classification into 5506.10.00.00 is definitive once the material has been confirmed as nylon or another polyamide and the fibers meet the criteria of being staple fibers that are carded, combed, or otherwise processed for spinning. The focus for classification within this specific code rests solely on the material origin of the synthetic staple fiber.