5211.42.00 - Denim

This category, HTS 5211.42.00, specifically classifies denim fabrics. Denim is characterized by its distinctive twill weave, typically with a warp of colored yarns (often indigo blue) and a weft of white yarns, resulting in a characteristic diagonal ribbing on the surface. While the broader Heading 52.11 covers woven cotton fabrics containing less than 85% cotton, mixed mainly or solely with man-made fibers, and weighing over 200 g/m², this particular HTS code is reserved for denim within that specification.

It is crucial to distinguish HTS 5211.42.00 from its sibling categories based on the fabric's weave. It differentiates itself from 5211.41.00 (plain weave) and 5211.43.00 (3-thread or 4-thread twill, including cross twill). Unlike a plain weave, denim’s defining characteristic is its twill construction. Furthermore, while 5211.43.00 also pertains to twill weaves, this code is specifically for denim, which implies a certain construction and often a particular aesthetic, most commonly associated with blue denim. Other fabrics under 5211.49.00 would encompass cotton-blend fabrics with a twill weave that do not meet the specific criteria for denim.

Within this denim classification, further sub-differentiation exists to refine the classification. The subcategories distinguish between "Blue denim" and "Other denim." This distinction is important for statistical purposes and potentially for applying specific trade regulations or duties, recognizing the prevalent use of indigo-dyed warp yarns in traditional denim production.