9017.90.01.36 - Of articles of subheading 9017.20.80

This HTS category, 9017.90.01.36, specifically covers parts and accessories pertaining to drawing, marking-out, or mathematical calculating instruments that fall under subheading 9017.20.80. This implies that the items classified here are components, replacements, or supplementary items designed for use with sophisticated drawing instruments, such as drafting machines, pantographs, or sophisticated drawing sets, which are not covered by other more specific provisions within subheading 9017.20.

To distinguish this category from its siblings, one must note the precise reference to subheading 9017.20.80. Unlike siblings that refer to other subheadings within 9017.20 (e.g., 9017.20.40 or 9017.20.70) or other primary subheadings of 9017 (e.g., 9017.10.40 or 9017.30.40), this classification is strictly limited to parts and accessories for a particular type of advanced drawing instrument. The differentiating factor lies in the original classification of the complete instrument to which these parts and accessories are intended to be attached or used with.

As this is a leaf node within the HTS structure, there are no further subcategories. Therefore, classification into 9017.90.01.36 hinges entirely on the determination that the part or accessory is specifically designed for and dedicated to instruments classified under 9017.20.80, which typically encompass more complex or specialized drawing and marking-out devices not otherwise specified. Examples might include specific gears for a pantograph, specialized leads or holders for a high-precision technical pen used in drafting, or unique mounting hardware for a drafting machine.