7015 - Clock or watch glasses and similar glasses, glasses for noncorrective or corrective spectacles, curved, bent, hollowed or the like, not optically worked; hollow glass spheres and their segments, for the manufacture of such glasses:

This HTS category, 7015, encompasses a specific range of glass products primarily used in timekeeping devices and for vision correction or protection. It includes clock or watch glasses, designed to protect the face of timepieces, as well as similar flat or shaped glass intended for spectacles, even if not optically ground for prescription purposes. The scope also extends to hollow glass spheres and segments when they are intended for the manufacture of these specific types of glasses, highlighting a focus on the raw or semi-finished components of these end products.

When considering other categories at the HTS root level, such as those for live animals or other primary commodities, HTS 7015 is clearly distinguished by its material composition (glass) and its manufactured nature. It is a part of Section XIII, "Articles of Stone, Plaster, Cement, Asbestos, Mica or Similar Materials; Ceramic Products; Glass and Glassware," indicating its placement within the broader group of manufactured goods derived from inorganic materials, specifically glass. This contrasts with the biological nature of agricultural or animal products found in earlier chapters.

Within HTS 7015, further distinctions are made through subcategories. The primary subdivision, 7015.10.00.00, specifically addresses "Glasses for corrective spectacles," carving out a distinct space for lenses designed for prescription eyewear. The residual "Other" category, 7015.90, serves as a catch-all for all other glasses that fit the general description of clock or watch glasses, or glasses for non-corrective eyewear, as well as the hollow glass spheres and segments mentioned in the parent description, but which do not fall under the specific corrective spectacle lens classification.