8544.11.00.20 - 33 AWG (0.18 mm in diameter) and finer 🖩

This HTS category, 8544.11.00.20, specifically classifies winding wire of copper that is 33 AWG (American Wire Gauge) or finer in diameter, corresponding to approximately 0.18 mm. Winding wire is a type of insulated conductor primarily used in the construction of electrical coils for motors, transformers, solenoids, and generators. The key distinguishing feature for this classification is the very fine gauge of the copper wire, indicating its suitability for applications requiring compact coil designs or specific electrical resistance properties achievable with thinner conductors.

This subcategory differentiates itself from its sibling category, 8544.11.00.30, which covers copper winding wire that is finer than 33 AWG but coarser than 22 AWG. Therefore, 8544.11.00.20 is for the most delicate of the copper winding wires within this group. The "Other" subcategory, 8544.11.00.50, would encompass any copper winding wire not meeting the precise diameter specifications of the other two subcategories.

As this is a leaf node within the HTS classification system, there are no further subdivisions. The classification hinges entirely on the specified gauge of the copper winding wire. When classifying, the precise measurement of the wire's diameter is critical. Examples of items that would fall under this classification include very fine magnet wire used in miniature electronic components, specialized coils for sensitive scientific instruments, or fine winding wire for precision electric motors where space and weight are paramount considerations.