5512.21.00.60 - Satin weave or twill weave (617)

This HTS category, 5512.21.00.60, specifically covers woven fabrics composed of 85 percent or more by weight of synthetic staple fibers, which are further characterized by containing 85 percent or more by weight of acrylic or modacrylic staple fibers. Within this group of unbleached or bleached fabrics, this particular subheading applies to those manufactured with a satin weave or a twill weave construction. The "(617)" notation often refers to specific weave patterns or characteristics as defined in trade glossaries.

The distinction of this category lies in its specific weave construction. Unlike sibling categories such as poplin/broadcloth (5512.21.00.10), sheeting (5512.21.00.20), printcloth (5512.21.00.30), cheesecloth/lawns/voiles/batistes (5512.21.00.40), or duck (5512.21.00.50), which are defined by their distinct weave types, this subheading targets fabrics exhibiting the characteristic interlacing of a satin or twill weave. Satin weaves are known for their smooth, lustrous surface due to long floats, while twill weaves are recognized by their diagonal lines.

As this is a leaf node within the HTS classification system, there are no further subcategories. Therefore, the classification is fully defined at this level, based on the material composition (85%+ synthetic staple fibers, with 85%+ of those being acrylic or modacrylic), condition (unbleached or bleached), and the specific weave construction (satin or twill). Classification within this heading hinges on the accurate identification of these physical and compositional attributes.