7412.20.00.25 - Nipples

This HTS category, 7412.20.00.25, specifically covers nipples made from copper-zinc base alloys, commonly known as brass, which are designed with threads. These threaded nipples are used as connectors for joining copper or copper alloy tubes and pipes, facilitating the assembly of fluid or gas conveyance systems. Their threaded nature allows for secure and often detachable connections within plumbing, mechanical, and industrial applications.

Distinguishing this category from its sibling, 7412.20.00.35 ("Other"), is the explicit requirement for threading. While both fall under "Of copper-zinc base alloys (brass): Other," this specific subheading is reserved for nipples that possess pre-formed external threads for connection, whereas the "Other" category would encompass unthreaded nipples or potentially other brass fittings that do not fit the threaded nipple definition. The parent category, "Copper tube or pipe fittings (for example couplings, elbows, sleeves): Of copper alloys," provides the overarching context that these are indeed fittings crafted from alloys of copper.

As this is a leaf node within the HTS, there are no further subcategories. Therefore, classification under 7412.20.00.25 relies on confirming the material composition (brass) and the specific form and function (threaded nipple for joining tubes or pipes). The intent and method of connection, specifically through standardized threading, are the primary determinative factors for goods falling into this precise classification.