8207.70.30.30 - End milling cutters

This HTS subcategory, 8207.70.30.30, specifically classifies end milling cutters. These are tools designed for use in milling machines or other machine tools, characterized by their cutting edges arranged on the circumference and end face, enabling them to cut sideways and into a workpiece. The defining criterion for inclusion in this subcategory is the composition of the cutting part, which must contain by weight over 0.2 percent of chromium, molybdenum, or tungsten, or over 0.1 percent of vanadium. This specification often points to the use of high-speed steels or other specialized alloys that provide superior hardness and wear resistance for demanding milling operations.

Distinguishing this category from its siblings, 8207.70.30.40 covers router bits for woodworking, which, while also milling tools, are generally designed for specific material types and often have different cutting edge geometries suited for shaping wood. The sibling category 8207.70.30.60, "Other," encompasses all other milling tools that do not meet the specific compositional criteria of the preceding subcategories. Therefore, 8207.70.30.30 is for metal-cutting end mills made from specific alloy compositions.

As a leaf node within the HTS structure, 8207.70.30.30 does not have further subdivisions. Classification into this specific code relies on the precise identification of the tool as an end milling cutter and verification of the specified alloying elements within its cutting portion. This ensures accurate tariff application for these specialized metalworking tools.