8518.90 - Parts:

HTS code 8518.90 encompasses "Parts" for the electrical sound equipment and apparatus detailed in heading 8518. This category serves as a catch-all for components and accessories that are not specifically enumerated under the preceding subheadings of 8518. Examples include diaphragms for loudspeakers, microphone capsules, amplifier circuit boards, speaker cones, and grilles not integral to an assembled loudspeaker enclosure. The classification here is determined by whether a part is exclusively designed for use with goods classified under 8518 and lacks the characteristics to be classified independently under another heading.

This category is distinct from its sibling subheadings which cover complete articles. Unlike 8518.10 (Microphones and stands), 8518.20 (Loudspeakers), 8518.30 (Headphones and earphones), 8518.40 (Audio-frequency electric amplifiers), and 8518.50 (Electric sound amplifier sets), 8518.90 is exclusively for the constituent elements of these finished products. Therefore, if an item is a functional, standalone unit within the scope of heading 8518, it will fall under one of those specific subheadings, not under "Parts."

The subcategories within 8518.90, such as those for specific types of handsets or repeaters, indicate that certain parts may have more granular classification within the "Parts" category. The general "Other" designation will apply to all remaining parts not specifically enumerated. This hierarchical structure ensures that even within the broad category of "Parts," greater specificity can be achieved for particular components, aiding in accurate duty assessment and trade statistics.