7409.21.00.75 - Of a thickness less than 1.6 mm

This HTS category, 7409.21.00.75, specifically classifies copper-zinc base alloy (brass) plates, sheets, and strip that are supplied in coils. The critical defining characteristic for this subcategory is its thickness, which must be less than 1.6 mm. This measurement is paramount in distinguishing it from other brass strip classifications.

Within the broader context of copper-zinc base alloy strip in coils, this category is further refined by its width and thickness. It specifically addresses material less than 5 mm in thickness and less than 500 mm in width, with the defining feature being the less than 1.6 mm thickness. This level of detail is essential for accurate customs declarations, ensuring that the physical properties of the imported or exported goods are correctly identified.

As a leaf node in the HTS structure, 7409.21.00.75 does not have further subdivisions. Therefore, its classification relies entirely on meeting the specified criteria for material composition (copper-zinc base alloy), form (plates, sheets, and strip in coils), width (less than 500 mm), and critically, the thickness (less than 1.6 mm). The sibling category, 7409.21.00.90, covers "Other" brass strips in coils of less than 5 mm thickness and less than 500 mm width, implying it captures those brass strips within these dimensions that are 1.6 mm or greater in thickness.