6103.10.90.50 - Subject to man-made fiber restraints (643)

This HTS classification, 6103.10.90.50, specifically covers knitted or crocheted suits for men or boys that are made from textile materials other than cotton or wool, and are subject to specific man-made fiber restraints. These restraints, indicated by "(643)", are crucial for determining the correct classification and are often linked to import quotas or limitations imposed by trade agreements. The suits themselves are defined by their construction and ensemble nature, typically comprising a jacket and trousers designed to be worn together.

Distinguishing this category from its siblings, 6103.10.90.40 covers suits subject to wool restraints, while 6103.10.90.80 encompasses "other" suits not falling under specific material restraints or man-made fiber limitations. The "Subject to cotton restraints" sibling, while not explicitly detailed with a code in this context, would similarly pertain to suits made of cotton with associated import limitations. Therefore, 6103.10.90.50 is exclusively for man-made fiber suits where specific trade restrictions apply.

As a leaf node, this classification does not have further subdivisions. The operative classification criteria for goods falling under this heading lie in the garment type (suit), manufacturing method (knitted or crocheted), the intended wearer (men or boys), the material composition (man-made fibers), and critically, the presence of the specified man-made fiber restraints. Importers must verify that their merchandise aligns with these precise characteristics and any associated documentation or declarations required by these restraints.