7318.15.60.40 - Other

This HTS category, 7318.15.60.40, encompasses "Other" socket screws that have shanks or threads with a diameter less than 6 mm, but are not made of stainless steel. It specifically includes socket head cap screws, socket set screws, and other similar fastening devices designed to be driven by a hex key or Allen wrench, provided they meet the diameter and material exclusions.

This classification is distinguished from its sibling category, 7318.15.60.10, which specifically covers socket screws of stainless steel. Therefore, for classification under 7318.15.60.40, the absence of stainless steel as the primary material is a key differentiating factor.

As this is a leaf node, there are no further subcategories within this specific HTS code. Classification terminates here, meaning that any socket screw meeting the diameter criteria and not being of stainless steel would fall under this designation. Practical classification would involve verifying the article's construction, the drive mechanism (socket head), the thread diameter, and ensuring it is not composed of stainless steel.