6813.81.00.50 - Other

This HTS category, 6813.81.00.50, specifically covers "other" friction materials and articles thereof, not mounted, that are designed for use in brakes, clutches, or similar applications. These articles are characterized by their composition, which is based on mineral substances or cellulose, and may incorporate textile or other materials. The "other" designation indicates that this subheading captures friction materials that do not fall under more specific classifications within this chapter, particularly those not containing asbestos.

This category serves as a residual classification for non-asbestos friction materials. It is distinguished from its sibling category, 6813.81.00.10, which is exclusively for friction materials intended for use in civil aircraft. Therefore, while both fall under the broader umbrella of non-asbestos friction materials for brakes and clutches, the intended application (civil aircraft versus general use) is the key differentiating factor for classification.

As this is a leaf node in the HTS structure, there are no further subcategories. The classification of goods under 6813.81.00.50 would depend on their specific physical form (e.g., sheets, rolls, segments), their intended function as a friction component (brake, clutch, etc.), and their material composition, provided they do not meet the criteria for other, more specifically defined subheadings.