5509.59.00.00 - Other (607)

This classification, HTS 5509.59.00.00, pertains to yarns spun from synthetic staple fibers that are not intended for retail sale. Specifically, it encompasses "other" yarns within the polyester staple fiber category that do not fall under more specific subheadings. The defining characteristic is that these yarns are composed of synthetic staple fibers, primarily polyester, and are not mixed with significant amounts of artificial staple fibers, wool, fine animal hair, or cotton to a degree that would warrant classification under a more specific subheading.

This category is distinguished from its siblings by the absence of specific mixtures. For instance, HTS 5509.51.00.00 covers polyester staple fiber yarns mixed mainly or solely with artificial staple fibers, while HTS 5509.53.00.00 addresses those mixed mainly or solely with cotton. HTS 5509.52.00.00 is designated for polyester staple fiber yarns mixed mainly or solely with wool or fine animal hair. Therefore, HTS 5509.59.00.00 acts as a residual category for polyester staple fiber yarns where the primary composition is polyester staple fiber and any other components do not meet the quantitative thresholds for inclusion in the mixed categories.

As this is a leaf node, there are no further subcategories. Classification within this heading relies on the precise fiber composition of the yarn. The "other" designation signifies that if a yarn is made from polyester staple fibers but does not contain significant proportions of artificial staple fibers, wool, fine animal hair, or cotton, it will fall into this category, provided it is not put up for retail sale. Examples of such yarns could include those 100% polyester staple fiber yarns intended for industrial use in textiles, such as for manufacturing apparel, home furnishings, or technical fabrics.