5806.39.30.10 - Containing 85 percent or more by weight of silk or silk waste

This HTS classification covers narrow woven fabrics, excluding those classified under heading 5807 (labels, badges, etc.), and excluding those assembled with an adhesive. Specifically, this subcategory pertains to narrow woven fabrics composed of textile materials other than those predominantly of cotton, man-made fibers, or wool. The key defining characteristic for this particular classification is that the fabric must contain 85 percent or more by weight of silk or silk waste.

The "Other" designation at this level signifies that the fabric is not primarily composed of the textile materials addressed in preceding sibling categories within the "Of other textile materials" grouping. For instance, it would differentiate from narrow woven fabrics that are predominantly of man-made staple fibers or predominantly of flax. The focus here is on the unique composition of silk or silk waste as the primary constituent, distinguishing it from other non-specific textile materials.

As this is a leaf node in the HTS classification system, there are no further subcategories. Therefore, classification under 5806.39.30.10 is definitive once the material composition of 85 percent or more by weight of silk or silk waste has been established for a narrow woven fabric meeting the general criteria of heading 5806. Examples would include silk ribbons, silk tapes, or other narrow fabric forms primarily made from silk.