0502 - Pigs', hogs' or boars' bristles and hair; badger hair and other brushmaking hair; waste of such bristles or hair:

This HTS category, 0502, encompasses natural bristles and hair derived from pigs, hogs, and boars, specifically for brushmaking purposes. It also includes badger hair and other similar animal hairs suitable for brush manufacturing, as well as any waste generated from these materials. The key characteristic for inclusion is the origin and intended use of these animal fibers in the production of brushes.

Unlike sibling categories within Chapter 05, which cover a broader range of animal products like natural pearls, precious stones, and even ivory, this classification is narrowly focused on specific animal hairs. It is distinct from categories in Chapter 01, which deal with live animals, or Chapter 41, which covers raw hides and skins. The emphasis here is on the processed or collected hair itself, not the live animal or the animal's skin.

The subcategories within 0502 further refine this classification. 0502.10.00.00 specifically addresses pigs', hogs', or boars' bristles and hair, including any waste derived from these. The remaining items that fall under this chapter but are not pigs', hogs', or boars' hair are classified under 0502.90.00.00, which serves as a catch-all for other brushmaking hairs, such as badger hair, and their respective wastes.