9030.90.84.00 - Of instruments and apparatus of subheading 9030.82

This HTS code, 9030.90.84.00, specifically covers parts and accessories for instruments and apparatus classified under subheading 9030.82. Subheading 9030.82 pertains to instruments and apparatus for measuring or checking electrical quantities, such as oscilloscopes and spectrum analyzers, as well as those used for measuring or detecting ionizing radiations, which are not of the type covered by heading 9028. Therefore, this category is for components and attachments designed to support the functionality of these sophisticated measurement and detection devices.

It is crucial to distinguish this category from its sibling, 9030.90.89, which also falls under "Other" parts and accessories. While 9030.90.89 serves as a residual category for all other parts and accessories within heading 9030 not specifically enumerated elsewhere, 9030.90.84.00 is exclusively for those parts and accessories that are integral to the operation of instruments and apparatus detailed in subheading 9030.82. This means that if a part is intended for use with an oscilloscope or a radiation detector, and not for general-purpose electrical measurement tools covered elsewhere, it will fall here.

As a leaf node, 9030.90.84.00 does not have further subcategories. Therefore, the focus for classification within this code is on identifying whether a part or accessory is specifically designed for, and predominantly used with, instruments and apparatus falling under subheading 9030.82. Examples of items that could be classified here include specialized probes, replacement circuit boards, power supply units, or housing components for oscilloscopes, spectrum analyzers, and ionizing radiation measurement devices. The key determining factor is the intended application and specific compatibility with the apparatus of subheading 9030.82.