7318.15.80.45 - Other

This HTS subcategory, 7318.15.80.45, specifically captures "Other" socket screws made of iron or steel, where these screws possess shanks or threads with a diameter of 6 mm or more. This classification is intended for socket screws that do not fall under more specific descriptions within the broader "socket screws" category. The defining characteristic remains the internal socket drive mechanism, distinguishing them from externally driven fasteners.

In contrast to its sibling category, 7318.15.80.30, which is reserved for socket screws of stainless steel, this classification applies to socket screws made from other types of iron or steel. The distinction is purely based on material composition, with stainless steel items being directed to the specified sibling.

As a leaf node within the HTS structure, this category does not have further subcategories. Therefore, the classification hinges on meeting the criteria of being a socket screw, having a diameter of 6 mm or more, and not being made of stainless steel. Practical classification will involve verifying the internal socket drive and measuring the shank or thread diameter. Examples within this category might include various hex-socket head cap screws or Allen bolts of substantial diameter not falling under stainless steel designations.