6103.29.20.40 - Containing 70 percent or more by weight of silk or silk waste (747)

This HTS code, 6103.29.20.40, specifically classifies knitted or crocheted ensembles for men or boys that are primarily composed of silk or silk waste. To fall under this heading, the garment ensemble must contain 70 percent or more by weight of silk or silk waste. This encompasses sets of garments designed to be worn together, such as a jacket and trousers, or a shirt and shorts, provided they are knitted or crocheted and meet the silk content requirement.

The "Other" subcategory within "Of other textile materials" for ensembles distinguishes these silk-based ensembles from those made from more commonly listed textile materials. While other subcategories within Chapter 61 might cover ensembles made of cotton, synthetic fibers, or wool, this specific code isolates those predominantly featuring silk. The "Trousers, breeches and shorts" at the subsequent level would generally refer to individual garments of those types, whereas this classification focuses on coordinated sets or ensembles.

As this is a leaf node, there are no further subcategories to introduce. Therefore, classification under 6103.29.20.40 relies solely on confirming the knitted or crocheted construction, its status as an ensemble for men or boys, and the crucial criterion of containing 70 percent or more by weight of silk or silk waste. When faced with borderline cases, examination of the specific weight percentages of all constituent fibers is paramount for accurate classification.