8458.11.00.90 - With a power rating exceeding 37.3 kW

This HTS category, 8458.11.00.90, specifically classifies horizontal, numerically controlled lathes designed for metal removal, which possess a power rating exceeding 37.3 kW. These machines represent the higher end of the power spectrum for such industrial equipment, indicating their capability for heavy-duty machining operations. Examples include large-scale CNC lathes used in heavy manufacturing, shipbuilding, or aerospace for shaping substantial metal components.

The defining characteristic of this subcategory is its power output. It is distinguished from its sibling categories by this specific threshold. Whereas 8458.11.00.30 covers lathes with power ratings below 18.65 kW, and 8458.11.00.50 encompasses those between 18.65 kW and 37.3 kW inclusive, this classification applies exclusively to machines operating at a power level greater than 37.3 kW. This distinction is crucial for customs purposes, as it often correlates with the intended application and economic value of the machinery.

As this is a leaf node within the HTS structure, there are no further subcategories. Therefore, the classification hinges entirely on the precise power rating of the numerically controlled horizontal lathe. Importers and exporters must ensure accurate measurement and reporting of the machine's power output to correctly apply this tariff heading and avoid misclassification.