5503.20.00.45 - Measuring 3.3 decitex or more but less than 13.2 decitex

This classification covers polyester staple fibers that are not carded, combed, or otherwise processed for spinning. Crucially, these fibers are characterized by their specific linear density, measuring 3.3 decitex or more but less than 13.2 decitex. This range is indicative of a medium-fine denier, suitable for a variety of textile applications where a balance of strength, softness, and bulk is desired.

The key distinguishing factor for this HTS code lies in the decitex measurement. It differentiates these polyester staple fibers from those classified under 5503.20.00.25, which have a decitex measurement of less than 3.3, and from 5503.20.00.65, which encompass fibers with a decitex of 13.2 or more. Therefore, the precise measurement of the fiber's fineness is the primary criterion for correct classification within this group.

As this is a leaf node in the HTS classification system, there are no further subcategories under 5503.20.00.45. Classification at this level is considered definitive based on the material (polyester staple fiber) and its specified decitex range. Examples of products falling here would include polyester staple fibers intended for spinning into yarns for apparel, home furnishings, or industrial textiles, where the medium-fine denier is an essential performance characteristic.