7307.22.10.00 - Sleeves (couplings)

This HTS category, 7307.22.10.00, specifically classifies threaded sleeves (also known as couplings) manufactured from stainless steel. These fittings are designed to join two pipes or tubes by means of screw threads, facilitating the extension or repair of piping systems. The key defining characteristic is the presence of internal or external threading on both ends of the sleeve, enabling a secure mechanical connection between compatible pipe ends.

Distinguishing this category from its sibling, 7307.22.50.00 (Other), is crucial. While both fall under "Other, of stainless steel" fittings, this specific heading is reserved for threaded sleeves. The sibling category encompasses all other stainless steel pipe and tube fittings that are *not* threaded elbows, bends, or sleeves, including items like plain sleeves, reducers, or specialized connectors that do not rely on threading for their primary connection method.

As a leaf node, this classification does not have further subcategories. Therefore, the classification criteria for 7307.22.10.00 are precise and include the material (stainless steel), the function (sleeving or coupling pipes), and the method of connection (threading). Any stainless steel sleeve intended for joining pipes via threads will be classified here, provided it does not meet the criteria for more specific headings.