Plows for Soil Preparation or Cultivation

Moldboard plows (8432100020) use a curved steel board to invert a furrow slice, while disc plows (8432100040) use concave rotating discs and are preferred in hard or sticky soils. Both fall within the same HS6 heading, but they occupy separate 10-digit HTS lines. Whether the distinction affects the applicable duty rate depends on the specific column-1 rate for each line; importers should verify current rates with CBP or a licensed customs broker.

Combination implements are generally classified by the function that gives the machine its essential character, or under the heading that appears last in numerical order if no single function predominates. A tool primarily designed to plow would fall under 8432.10, while one primarily designed to harrow would fall under 8432.21 or 8432.29. When functions are genuinely equal, a binding ruling from CBP is the most reliable path to correct classification.