8207.90.30.30 - Hobs and other gear cutting tools

This HTS category, 8207.90.30.30, specifically classifies cutting tools designed for use with hand tools or machine tools where the cutting part contains a significant amount of alloying elements. The defining characteristic is the chemical composition of the cutting portion, which must contain by weight over 0.2 percent of chromium, molybdenum, or tungsten, or over 0.1 percent of vanadium. These alloys impart enhanced hardness, wear resistance, and heat tolerance, making these tools suitable for demanding cutting operations. Examples within this category include certain types of milling cutters, drill bits, and reamers that meet these specific material composition requirements.

This category is distinguished from its sibling, 8207.90.30.85, which covers "Other" cutting tools. While both fall under the broader heading of "Other interchangeable tools," this specific category is narrowly defined by its material composition. The sibling category would encompass cutting tools that do not meet the specified alloy content thresholds for chromium, molybdenum, tungsten, or vanadium, or that are not primarily categorized as cutting tools.

As this is a leaf node within the HTS structure, there are no further subcategories. Classification into 8207.90.30.30 is determined solely by the presence of the specified alloying elements in the cutting part of the interchangeable tool. When classifying, it is crucial to verify the material composition of the cutting edge or insert to ensure accurate placement within the tariff schedule.