Chapter 84 is the core chapter in the HS classification system covering machinery, mechanical appliances, and their parts, including power machinery, metalworking machine tools, industrial robots, office equipment, air conditioning and refrigeration equipment, fluid handling machinery, etc. Goods in this chapter generally have characteristics such as being power-driven, movable or fixed installation, and used for production processing or energy conversion. The chapter notes explicitly exclude certain specific goods, such as hand-held electric tools (classified under 8508), toy electric motors (9503), etc. Heading 8466 covers parts and accessories suitable for use solely or principally with the machines of headings 8456 to 8465, including work holders, tool holders, dividing heads, and other accessories specially designed for machine tools. These parts and accessories must be used in conjunction with the main machine and do not themselves constitute complete machines. Goods under this heading typically do not independently perform processing functions, but assist machine tools in achieving clamping, positioning, indexing, and other operations. The first 2 digits 84 represent Chapter 84, namely nuclear reactors, boilers, machinery, mechanical appliances, and their parts. The 3rd-4th digits 66 represent heading 8466, namely parts and accessories suitable for use solely or principally with the machines of headings 8456 to 8465. The 5th-6th digits 20 represent subheading 846620, specifically work holders. Work holders are a type of machine tool accessory used to secure, position, and support workpieces during processing to ensure processing accuracy and safety. This subheading is not further subdivided; all work holders for machine tools are classified under this code. This commodity is a machine tool work holder, which is an accessory suitable for use solely with machine tools and meets the description of heading 8466. It is not classified under 8465 (machine tools for working wood, cork, bone, hard rubber, hard plastics or similar hard materials) because the holder itself does not perform processing functions; nor under 8205 (hand tools) because it is a machine tool accessory rather than a hand tool. Therefore, classification under 846620 is most accurate.

Product Name: Fill in the standard name of the commodity, such as "machine tool work holder" or the specific type name, which must be consistent with the actual item. Use: Explain for which machine tool the holder is used (such as lathe, milling machine, grinding machine) and what workpiece is processed. Brand: Fill in the manufacturer or brand name; if no brand, fill in "unbranded". Model: Fill in the specific model or specification of the product for customs identification and classification. Material: Fill in the main material of the holder, such as cast iron, steel, aluminum alloy, etc. Applicable Machine Tool Type: Specify for which machine tool the holder is exclusively used, such as lathe, milling machine, grinding machine, etc. Working Principle: Briefly describe the clamping method of the holder, such as mechanical clamping, hydraulic clamping, pneumatic clamping, etc. Product Name: Machine tool work holder (hydraulic three-jaw chuck); Use: For CNC lathe clamping metal workpieces; Brand: XX; Model: K11-200; Material: Alloy steel; Applicable Machine Tool Type: Lathe; Working Principle: Hydraulic-driven three-jaw synchronous clamping. Confusing the holder with the complete machine tool, incorrectly classifying under machine tool complete machine codes such as 8458. Ignoring the condition of "suitable for use solely or principally with", incorrectly classifying general-purpose holders under 846620. False declaration of material, such as declaring cast iron as steel, which may affect classification.

The core criteria for classification are: whether the commodity is suitable for use solely or principally with the machine tools of headings 8456 to 8465, and whether it is a work holder. According to HS notes, 8466 includes work holders suitable for use solely with machine tools, regardless of their material. If the holder can be used generally with multiple equipment or non-machine tools, it may be classified under other codes. It is also necessary to confirm that the holder does not constitute a complete machine and is not classified under other more specific headings. 846610 Tool holders: 846610 is tool holders, used for holding cutting tools or tools; 846620 is work holders, used for holding workpieces. The two have different functions and must not be confused. 846630 Dividing heads and other special attachments for machine tools: 846630 includes dividing heads, indexing plates, etc., used to change the angular position of workpieces; 846620 refers only to work holders, with a single function. 8205 Hand tools: 8205 is hand tools, such as pliers, wrenches; 846620 is machine tool accessories, which need to be used with machine tools, not manually. 848790 Machine parts: 848790 is other machine parts, not exclusively for machine tools; 846620 is exclusively for machine tools and is a holder. Is it suitable for use solely or principally with the machine tools of headings 8456-8465? Is it used for holding workpieces rather than tools? Does it have an independent function, rather than being a complete machine? Can it be classified under other more specific headings? Do material and working principle affect classification?

What is the difference between 846620 and 846610? 846620 is work holders, used for holding workpieces; 846610 is tool holders, used for holding cutting tools. The two have different functions, and classification should be determined based on actual use. If a holder can be used for both workpieces and tools, it should be classified according to its principal use. Are hydraulic holders and pneumatic holders both classified under 846620? Yes, as long as the holder is suitable for use solely or principally with machine tools and is used for holding workpieces, regardless of its driving method (hydraulic, pneumatic, mechanical), it is classified under 846620. However, note that if the holder is a general-purpose type, it may be classified under other codes. What are the declaration elements for machine tool work holders? The main declaration elements include: product name, use, brand, model, material, applicable machine tool type, working principle, etc. The specific requirements are subject to customs; it is recommended to provide detailed descriptions when declaring to avoid being too general. How to determine whether a holder is "suitable for use solely" with machine tools? "Suitable for use solely" with machine tools means that the holder is designed to be used only with machine tools and cannot be used with other equipment. If the holder can be used generally with other machinery, it may be classified under other codes. This is usually determined based on product manuals, design drawings, and actual usage. How to check the tax rate for 846620? Tax rates vary depending on the country, trade agreements, country of origin, and other factors. It is recommended to check the latest tax rates through the official website of the General Administration of Customs, the International Trade Single Window, or consult a professional customs broker. Note that this answer does not provide specific tax rate figures. Are imported used machine tool holders classified under 846620? Yes, used machine tool holders are still classified under 846620, but note that used mechanical and electrical products may involve additional inspection and quarantine requirements. When declaring, the degree of newness must be truthfully declared, and relevant regulations must be complied with. Are both holders and molds classified under 846620? No, molds are usually classified under the 8480 series, while holders are classified under 846620. Molds are used for forming, and holders are used for clamping; their functions are different. However, certain combination molds may need to be classified according to their principal function.