9902.13.82 - Nonwoven radial segment and chordal orientation brake segments of oxidized polyacrylonitrile fibers, made up and presented as cut otherwise than into squares or rectangles, such segments formed by needling web and unidirectional tow fabrics together, the foregoing designed for use in aircraft braking systems (provided for in subheading 6307.90.98)

This HTS category, 9902.13.82, specifically covers nonwoven radial and chordal brake segments designed for aircraft braking systems. These segments are manufactured from oxidized polyacrylonitrile fibers and are constructed by needling together web and unidirectional tow fabrics. Notably, these segments are presented cut into shapes other than squares or rectangles, indicating a specialized, non-standardized form.

While other categories within Chapter 99 deal with temporary legislative provisions, trade agreements, and agricultural restrictions, this particular subheading is a specialized classification for a distinct class of goods. Unlike the broad categories of live animals or poultry found in Chapter 1, or general manufactured goods elsewhere in the HTS, 9902.13.82 targets a highly specific component used in aviation technology. Its focus is solely on these specially fabricated brake segments, distinguished by their material composition, manufacturing process, and intended application.

As a leaf node, HTS 9902.13.82 does not have further subcategories. Its classification is determined by the precise description provided, which emphasizes the material (oxidized polyacrylonitrile fibers), the structural method (needled web and unidirectional tow fabrics), the shape (cut otherwise than into squares or rectangles), and the ultimate purpose (aircraft braking systems). This level of specificity ensures that only these particular brake segments are classified under this provision, avoiding misclassification with more general textile articles or aircraft parts.