5101.29.40.30 - Not finer than 58s

This HTS category, 5101.29.40.30, specifically covers wool that has been degreased but not carbonized, and is further classified as "not finer than 58s." This designation pertains to the fineness or diameter of the wool fibers. Wool classified under this code meets the criteria of being processed only to the degreased state, meaning impurities like grease and dirt have been removed, but no further processing such as carbonization has occurred.

The key differentiator for this category, when compared to its sibling 5101.29.40.60, lies in the fiber fineness. While both are degreased, not carbonized wool, this specific code applies to wool with a fiber diameter that is *not finer than 58s*. This means the wool fibers are coarser than those classified under the "finer than 58s" designation. The "s" system refers to a standardized measure of wool fineness, with lower numbers indicating coarser fibers and higher numbers indicating finer fibers.

As this is a leaf node within the HTS, there are no further subcategories. Therefore, classification within this code is determined solely by the degreased condition, the absence of carbonization, and the specific fineness standard of "not finer than 58s." This classification is critical for accurately applying duty rates and trade statistics for imported or exported wool that meets these precise physical characteristics.