5404.19.80.20 - Of nylon or other polyamides

This HTS classification, 5404.19.80.20, specifically designates synthetic monofilaments that are at least 67 decitex and where no cross-sectional dimension exceeds 1 millimeter. Crucially, this subcategory applies when these monofilaments are manufactured from nylon or other polyamides. These materials are known for their strength, elasticity, and durability, making them suitable for a variety of industrial and consumer applications where high performance is required.

This category is distinguished from its siblings by its specific material composition. While 5404.19.80.40 covers similar monofilaments made of polyesters, and 5404.19.80.80 encompasses all other synthetic monofilaments not specified elsewhere, this particular code isolates those made from nylon or polyamides. The selection of nylon or polyamide dictates the unique physical properties and potential end-uses of the monofilament, thus warranting a distinct classification.

As this is a leaf node within the HTS, there are no further subdivisions. Therefore, the classification hinges entirely on meeting the criteria of synthetic monofilament with a decitex of 67 or more, a maximum cross-sectional dimension of 1 mm, and the explicit use of nylon or other polyamides as the base material. Examples of goods that would fall here include nylon fishing line, certain types of high-strength sewing thread made from polyamide, and monofilaments used in specialized industrial meshes where polyamide's resilience is paramount.