Components
Components of an instrument means parts or assemblies of parts which are substantially less than the instrument to which they relate. A component enables an instrument to function at a specified minimum level, while an accessory adds to the capability of an instrument. Applications shall not be accepted for components of instruments that did not enter duty-free under subheading 9810.00.60, HTSUS or for components of instruments being manufactured or assembled by a commercial firm or entity in the U.S. In determining whether an item is a component ineligible for duty-free consideration or an accessory eligible for such consideration, Customs and Border Protection shall take into account such factors as the item's complexity, novelty, degree of integration and pertinency to the research purposes to be performed by the instrument as a whole. The above notwithstanding, separable components of some instruments may be eligible for duty-free treatment. See paragraph (f) of this section.