7229.90.50.31 - With a diameter of 1.0 mm or more but less than 1.5 mm

This HTS classification covers round wire made from alloy steel that falls within a specific diameter range. Specifically, it applies to wire with a diameter measuring 1.0 mm or more but strictly less than 1.5 mm. This category is part of the broader classification of "Wire of other alloy steel," indicating that the steel composition meets the criteria for alloy steel but does not fall under more specialized alloy steel wire classifications.

The key distinguishing factor for this category is its precise diameter. It is differentiated from sibling categories that cover alloy steel wire with smaller diameters (less than 1.0 mm) and those with larger diameters (1.5 mm or more). Therefore, accurate measurement of the wire's diameter is crucial for correct classification under this code.

As this HTS code represents a leaf node within the Harmonized Tariff Schedule, there are no further subcategories to introduce. Classification into this specific code is final based on the material being alloy steel, the form being round wire, and the diameter falling within the defined range of 1.0 mm to less than 1.5 mm. Examples of products that could fall under this classification include certain types of industrial springs, specialized fasteners, or components for mechanical devices where alloy steel wire of this precise dimension is required.