8456.20.10 - For working metal

HTS code 8456.20.10 specifically covers ultrasonic machine tools designed for working metal. These machines utilize high-frequency sound waves to remove material from metal workpieces, achieving precise cuts, drilling, or shaping. This category is a subset of machine tools that employ various non-traditional material removal processes, including laser, electro-discharge, and water-jet cutting.

This classification is distinguished from its sibling category, 8456.20.50 (Other), which would encompass ultrasonic machine tools intended for working materials other than metal. The primary differentiator here is the intended application and the type of material being processed.

Within HTS code 8456.20.10, further subdivisions exist to refine classification. The subcategory 8456.20.10.10 applies to numerically controlled (NC) ultrasonic machines, which are guided by pre-programmed instructions for automated operation and high precision. The remaining subcategory, 8456.20.10.50, covers "Other" ultrasonic machine tools for working metal, which would include those operated manually or with simpler control systems.