6403.40.30.90 - Other

This HTS subcategory, 6403.40.30.90, specifically encompasses "Other" footwear that meets the criteria of incorporating a protective metal toe-cap and featuring welt construction, with outer soles made of rubber, plastics, leather, or composition leather, and uppers of leather. These are distinct from other welt footwear with protective toe-caps that might have specific upper materials, such as pigskin. The welt construction is a key defining feature, where the upper is stitched to a strip of leather or rubber (the welt), which is then sewn to the sole and heel.

The term "Other" in this classification indicates that the footwear falls under the broader category of welt footwear with protective metal toe-caps but does not fit into any more granular, specified classifications within this group. This often includes footwear where the leather used for the upper is not specifically identified by species or treatment in other subcategories, or where the overall design or combination of features warrants this general designation. The presence of a protective metal toe-cap is a crucial functional element, indicating the footwear is designed for hazardous environments or occupational safety.

As a leaf node, 6403.40.30.90 does not have further subdivisions. Therefore, the focus for classification within this code is on confirming that the footwear possesses welt construction, a protective metal toe-cap, leather uppers, and outer soles made of rubber, plastics, leather, or composition leather. Any footwear meeting these primary criteria, but not falling into more narrowly defined sibling categories, will be classified here.