7412.20.00.90 - Other

This HTS category, 7412.20.00.90, covers "other" fittings for copper tubes or pipes that are made from copper alloys. These are articles designed to join, connect, or alter the direction of copper alloy tubes or pipes. This specifically includes fittings that are not threaded and do not fall under any more specific subheadings within the "of copper alloys" classification.

The crucial distinction for this category lies in its exclusion of threaded fittings. While both threaded and non-threaded fittings are classified under "of copper alloys," this particular subheading is reserved for those where the joining mechanism is not a screw thread. Examples might include press-fit couplings, solder-type elbows, compression sleeve fittings, or any other joining method not relying on threaded engagement.

As a leaf node, this category represents the most granular level of classification for these specific copper alloy pipe and tube fittings. Therefore, the focus shifts to definitively identifying fittings that are made from copper alloys, are intended for use with copper tubes or pipes, and lack threaded connections. Careful examination of the fitting's design and joining method is essential to ensure correct classification within this residual "other" category.