8461.20.40.00 - Numerically controlled

This HTS code, 8461.20.40.00, specifically classifies numerically controlled shaping or slotting machines. These machines are designed for metalworking operations where a tool reciprocates in a straight line to remove material, creating specific shapes or grooves. The key defining characteristic is their numerical control (NC) system, which allows for automated and precise execution of complex machining sequences, often guided by programmed instructions. This differentiates them from simpler, manually operated machines within the same broader family.

The distinction from its sibling category, 8461.20.80, lies precisely in the presence of numerical control. The sibling category covers "Other" shaping or slotting machines that are not numerically controlled, implying they rely on manual operation, mechanical linkages, or simpler automation methods that do not involve a programmable NC system. Therefore, the decision to classify under 8461.20.40.00 hinges on the presence and functionality of a sophisticated, programmable control system capable of executing pre-determined machining paths.

As this is a leaf node, there are no further subcategories. The classification of a machine tool under 8461.20.40.00 is therefore final at this level, based on its function as a numerically controlled shaping or slotting machine. Examples include CNC planers, CNC slotters, and CNC keyseaters, provided they meet the criteria of working by removing metal and operating under numerical control.