5911.20.20.00 - Of silk

HTS code 5911.20.20.00 specifically classifies "bolting cloth, whether or not made up, of silk." This category applies to woven fabrics made from silk yarn, meticulously constructed to serve the precise requirements of sieving, sifting, or screening granular materials, particularly in the milling of flour and other fine powders. The inherent strength, fineness, and durability of silk fibers make these fabrics ideal for applications demanding controlled particle separation and resistance to wear.

This specific classification is distinguished from its sibling category, 5911.20.30.00, which encompasses "other" bolting cloth not of silk. While both fall under the broader umbrella of textile articles for technical industrial uses, the key differentiating factor for 5911.20.20.00 is the exclusive use of silk as the primary textile material. Therefore, any bolting cloth manufactured from synthetic fibers, cotton, or other materials would be classified under the "other" category, even if intended for similar industrial applications.

As 5911.20.20.00 represents a leaf node within the HTS, it has no further subcategories. Classification at this level is determined solely by the material composition (silk) and the product's designated function as bolting cloth, which is specifically addressed by Note 8 to Chapter 59. Importers and exporters should ensure that the goods are indeed woven silk fabrics intended for industrial sieving purposes to correctly apply this HTS code.