8433.51.00.10 - Self-propelled

This HTS classification covers self-propelled combine harvester-threshers. These machines are designed to perform multiple harvesting operations simultaneously, including cutting, gathering, threshing, and separating grain from the stalk in a single pass. The key characteristic for classification here is the self-propelled nature of the machine, meaning it has its own integrated propulsion system allowing it to move independently in the field.

Distinguishing this category from its sibling, 8433.51.00.90 ("Other"), is the specific inclusion of combine harvester-threshers. The sibling category would encompass other types of harvesting or threshing machinery not fitting the specific description of a self-propelled combine harvester-thresher. For example, it might include towed combine harvesters or standalone threshing machines that are not integrated into a self-propelled harvesting unit.

As this is a leaf node, there are no further subcategories within 8433.51.00.10. Classification at this level relies on the definitive identification of a machine as a self-propelled combine harvester-thresher, encompassing a broad range of models and manufacturers that meet these operational and propulsion criteria.