6110.30.20 - Containing 30 percent or more by weight of silk or silk waste

This HTS classification covers knitted or crocheted articles of apparel and clothing accessories that fall under the broader category of "Sweaters, pullovers, sweatshirts, waistcoats (vests) and similar articles, knitted or crocheted," specifically those composed "Of man-made fibers." The defining characteristic of this subcategory, 6110.30, is that the articles contain 30 percent or more by weight of silk or silk waste, while still being primarily constructed of man-made fibers. This means the silk component is significant but not the dominant fiber, distinguishing it from garments where silk is the primary fiber.

Within the "Of man-made fibers" grouping (6110.30), this particular subheading is further defined by its inclusion of items not specifically enumerated in other subheadings at this level. For instance, it is distinguished from the sibling category 6110.30.30, which would cover other man-made fiber articles not meeting the silk content threshold or other specific exclusions. Therefore, 6110.30.20 is a residual category for man-made fiber garments with a notable silk content that don't fit more specific classifications.

The subcategories under this heading provide further detail on the types of garments classified. They differentiate between "Sweaters," "Vests, other than sweater vests," and "Other" articles. This breakdown allows for more precise classification based on the specific garment type, ensuring that each article is assigned to the most accurate HTS code based on its form and function within the broader scope of knitted or crocheted apparel.