7317.00.55.19 - With a length of less than 25.4 mm and with a diameter of less than 1.65 mm

This HTS category, 7317.00.55.19, specifically classifies nails, tacks, and similar articles of iron or steel that are made of round wire and are of one-piece construction. The defining characteristics for inclusion in this category are precise dimensional tolerances: the articles must have a length of less than 25.4 mm and a diameter of less than 1.65 mm. These small fasteners are typically used in applications where precision and minimal material usage are paramount, such as in the assembly of small wooden items, crafts, or certain types of packaging.

While other categories within heading 7317 cover various types of nails and fasteners, this subcategory is distinguished by its narrow focus on diminutive, round wire, one-piece construction articles. It differentiates itself from categories that may include larger fasteners, those made from other materials or wire shapes, or those not of one-piece construction. The "Other" designation at this level signifies that no further sub-classification based on material of the head or specific manufacturing process is applicable for these particular dimensions.

As this is a leaf node within the HTS, there are no further subcategories. Classification concludes at this level based on the material (iron or steel), form (nails, tacks, etc.), construction (one-piece, round wire), and the specific dimensional criteria of length less than 25.4 mm and diameter less than 1.65 mm. Importers and exporters must ensure their goods precisely meet these physical attributes to correctly apply this classification code.