8505.90.40.00 - Work holders and parts thereof

HTS Code 8505.90.40.00 specifically covers "Work holders and parts thereof" within the broader category of "Electromagnets; permanent magnets and articles intended to become permanent magnets after magnetization; electromagnetic or permanent magnet chucks, clamps and similar holding devices; electromagnetic couplings, clutches and brakes; electromagnetic lifting heads; parts thereof." This classification applies to devices designed for the secure and stable holding of workpieces during manufacturing, machining, or other processing operations. These can include, but are not limited to, magnetic chucks (excluding those solely for electromagnetic lifting heads), vises, fixtures, and clamps that utilize magnetic or electromagnetic principles for their holding function.

This category is distinguished from its sibling, 8505.90.30.00, which specifically covers "Electromagnetic lifting heads." While both are holding devices, lifting heads are designed for the vertical transport and manipulation of ferrous materials, whereas work holders are intended for stationary, precise positioning and securing of workpieces during operations like milling, grinding, or welding. Furthermore, 8505.90.70.00 pertains to electromagnets for specific medical imaging apparatus, and 8505.90.75.01 represents a residual category for other miscellaneous items within this heading that do not fit more specific subheadings.

As this is a leaf node within the HTS structure, there are no further subcategories for this specific code. Therefore, classification under 8505.90.40.00 relies on determining that the item is a work holder or a component thereof, and that it is not specifically classified elsewhere in heading 8505, particularly as an electromagnetic lifting head or a specialized electromagnet for medical equipment. The primary classification criteria will be the item's design and intended use in securing workpieces for processing.