6117.90.10.20 - Of blouses and shirts (739)

This HTS category, 6117.90.10.20, specifically classifies knitted or crocheted parts of garments that are intended for blouses and shirts. These parts are distinct from the finished garments themselves, functioning as components such as sleeves, collars, cuffs, or front panels that are designed to be assembled into blouses or shirts. The key criterion for classification here is the intended use of the part as a constituent element of a blouse or shirt.

It is crucial to differentiate this category from its siblings. For instance, 6117.90.10.10 covers parts for sweaters, 6117.90.10.30 for coats and jackets, and 6117.90.10.40 for trousers, breeches, and shorts. The distinction lies solely in the type of finished garment the part is intended to be incorporated into. While all fall under "Parts" of knitted or crocheted garments and accessories, the specific end-product dictates the correct subclassification. The residual category, 6117.90.10.60 "Other," would capture parts for any other type of knitted or crocheted garment not specifically enumerated.

As this is a leaf node within the HTS structure, there are no further subdivisions. Therefore, classification within 6117.90.10.20 is determined by identifying the knitted or crocheted part and confirming its definitive purpose in the construction of blouses and shirts. The presence of 70 percent or more by weight of silk or silk waste in these parts is a material prerequisite that must also be met for accurate classification within this specific sub-heading.