7320.20.50.20 - Other

This HTS classification, 7320.20.50.20, encompasses "Other" helical springs made from iron or steel wire, where the wire has a cross-sectional dimension less than 5.1 mm. These springs are characterized by their helical or coiled shape and are typically used in applications not specifically defined by other subheadings within this category. Their function is to store mechanical energy, absorb shock, or provide a resisting force.

This specific classification is distinguished from its sibling category, 7320.20.50.10, which is reserved for helical springs of wire less than 5.1 mm specifically designed and suitable for use in mattress supports and mattresses falling under heading 9404. Therefore, if a helical spring of this wire dimension is intended for or adaptable to mattress applications, it would be classified under the sibling code, not this one.

As this is a leaf node, there are no further subcategories. This means that helical springs of wire with a cross-sectional dimension of less than 5.1 mm, which are not suitable for mattress support or mattress use, will be classified under this residual "Other" designation. Examples might include springs used in small mechanical devices, pens, or other general industrial or consumer goods where specialized mattress applications are not a factor.