5007.10 - Fabrics of noil silk:

This category, HTS Code 5007.10, specifically encompasses woven fabrics where the primary material is noil silk. Noil silk is a byproduct of silk processing, typically consisting of shorter silk fibers that are not suitable for spinning into fine silk yarn. Therefore, fabrics classified under this heading are characterized by their construction from these noil silk fibers, resulting in a fabric that often has a slightly rougher texture or a flecked appearance compared to fabrics made from reeled silk.

It is important to distinguish 5007.10 from its sibling categories. While 5007.20.00 covers other woven silk fabrics containing 85 percent or more by weight of silk or silk waste (excluding noil silk), and 5007.90.00 addresses "other" woven silk fabrics without a specific percentage threshold, 5007.10 is exclusively for those fabrics where noil silk is the defining component. This distinction is crucial for accurate tariff application, as the specific type of silk fiber content dictates the correct classification.

The subdivisions within 5007.10 further refine the classification based on the precise composition of the fabric. Subcategory 5007.10.30 applies to those noil silk fabrics containing 85 percent or more by weight of silk or silk waste, ensuring that even within the noil silk category, fabrics with a high silk content are specifically identified. The "Other" subcategory, 5007.10.60, is for noil silk fabrics that do not meet the 85 percent threshold, covering a broader range of blended or less pure noil silk constructions.