6203.39.50.00 - Containing 70 percent or more by weight of silk or silk waste (733)

This HTS classification category covers men's or boys' suit-type jackets and blazers that are not knitted or crocheted and are manufactured from textile materials other than those specifically enumerated in preceding subheadings. The defining characteristic for inclusion here is that these garments must contain 70 percent or more by weight of silk or silk waste, as indicated by the parenthetical note (733). This specifically targets high-end or specialty tailored jackets where silk is the predominant fiber.

To distinguish this category from its siblings, it's important to note the distinction from "Of artificial fibers" and "Other." While those categories also fall under "Of other textile materials" for suit-type jackets and blazers, they are reserved for garments where artificial fibers are dominant or where the textile composition does not meet the specific silk content threshold outlined here. Therefore, this particular classification is highly specific to the luxurious composition of the fabric.

As this is a leaf node in the HTS, there are no further subcategories. Classification under 6203.39.50.00 is therefore final for men's or boys' suit-type jackets and blazers that are primarily composed of silk or silk waste and are not of artificial fibers or other specified textile materials. When classifying, the weight percentage of silk content is the critical determining factor.