8466.30.10.00 - Dividing heads

This HTS category, "Dividing heads," specifically classifies mechanical devices designed for use with machine tools. These heads are essential attachments that enable precise rotational indexing of a workpiece, allowing for the accurate creation of multiple divisions or patterns on its surface. Their primary function is to divide a circle into a specified number of equal parts, facilitating operations such as milling gear teeth, fluting drills, or engraving intricate designs.

This classification distinguishes itself from its sibling category, "Other special attachments," by its singular and specialized function. While "other special attachments" encompass a broader range of devices that enhance machine tool capabilities, dividing heads are solely dedicated to rotational indexing. This specificity ensures accurate tariff application by isolating these unique workholding and indexing mechanisms.

As a leaf node within the HTS, this category does not have further subcategories. Therefore, classification within 8466.30.10.00 relies on the definitive identification of the item as a dividing head intended for use with machines falling within headings 8456 to 8465. Key classification criteria include the presence of a spindle, indexing mechanism, and provisions for securing a workpiece.