5107.10.60.00 - Other (400)

This HTS category, 5107.10.60.00, encompasses "Other" yarns of combed wool, not put up for retail sale, which contain 85 percent or more by weight of wool. This classification serves as a residual category for combed wool yarns that do not meet the specific criteria of other subheadings within this group. The "400" designation likely refers to a specific unit of quantity or a particular statistical reporting requirement.

This category is distinct from its sibling, 5107.10.30.00, which specifically covers combed wool yarns with an average fiber diameter of 18.5 microns or less. Therefore, 5107.10.60.00 is for those combed wool yarns containing 85% or more wool, but where the average fiber diameter exceeds 18.5 microns, or where the fiber diameter is not a determining factor for classification under other specific headings. The key distinguishing factor is the absence of the specified fine fiber diameter limitation found in its sibling category.

As this is a leaf node, there are no further subcategories to introduce. Classification within this specific HTS code will rely on the affirmative criteria of meeting the "85 percent or more by weight of wool" threshold and not fitting into any more specific provision for combed wool yarn. Importers and exporters should ensure that their goods are indeed combed wool yarn, not put up for retail sale, and that they contain at least 85% wool by weight, while also verifying that they do not meet the criteria for any other designated subheading within Chapter 51.