7217.10.40.40 - In coils weighing not more than 2 kilograms

This HTS category specifically covers wire of iron or non-alloy steel that is not plated or coated, whether or not polished. Crucially, these wires must contain less than 0.25 percent carbon by weight and have a round cross-section with a diameter measuring less than 1.5 mm. The defining characteristic for this particular subcategory is that the wire has undergone heat treatment.

Distinguishing this category from its sibling, 7217.10.40.45, hinges on the processing applied. While both are round wires of iron or non-alloy steel with specific carbon content and diameter, and are not plated or coated, this entry exclusively includes those that have been subjected to heat treatment. The sibling category encompasses all other non-heat-treated wires meeting the other criteria at this level.

As this is a leaf node in the HTS structure, there are no further subcategories. Classification into this code signifies that the wire meets all preceding criteria, including the specific diameter, carbon content, lack of plating or coating, and the application of a heat treatment process. Examples would include drawn wire that has been annealed, normalized, or hardened and tempered to achieve desired mechanical properties, and is then wound into coils weighing not more than 2 kilograms.