7409.90.90 - Of a width of less than 500 mm

This HTS category encompasses copper plates, sheets, and strips that are manufactured from other copper alloys, possess a thickness of less than 5 millimeters, and crucially, have a width measuring less than 500 millimeters. These articles are distinct from their counterparts in Chapter 74 by their specific dimensional characteristics.

The defining feature of this category, separating it from its sibling 7409.90.50, is the width. While 7409.90.50 covers articles with a width of 500 millimeters or more, this classification is strictly for those with a width below the 500-millimeter threshold. This distinction is vital for accurate customs declaration and duty assessment, as width can influence manufacturing processes and end-use applications.

Within this specific classification, further subdivisions exist to account for variations in the "other copper alloys." The subcategories 7409.90.90.30 and 7409.90.90.60 allow for the segregation of beryllium copper alloys from all other types of non-specified copper alloys, providing a more granular level of detail for trade analysis and product tracking.