7606.11.30.30 - With a thickness of more than 6.3 mm

This HTS category, 7606.11.30.30, specifically classifies rectangular (including square) plates, sheets, and strip of aluminum, not alloyed and not clad, that have a thickness exceeding 6.3 mm. These are substantial forms of aluminum, intended for applications where rigidity and structural integrity are paramount, distinguishing them from thinner sheet metal products.

The key distinguishing feature of this category is the thickness requirement. It is differentiated from its sibling category, 7606.11.30.60, which covers similar rectangular, non-alloyed, and non-clad aluminum products but with a thickness of 6.3 mm or less. Therefore, the precise measurement of the aluminum article's thickness is critical for correct classification between these two subcategories.

As this node represents a leaf node in the HTS classification structure, there are no further subcategories. Classification decisions under this code will hinge solely on confirming the material (not alloyed aluminum), form (rectangular plate, sheet, or strip), surface treatment (not clad), and critically, the thickness being greater than 6.3 mm.