Chapter 84 is the major category in the HS classification system for "nuclear reactors, boilers, machinery and mechanical appliances and parts thereof", covering almost all mechanical equipment from steam boilers, internal combustion engines, pumps, fans, refrigeration equipment to machine tools, bearings, transmissions, etc. The core feature of this chapter is that the goods have mechanical motion or energy conversion functions, and are mostly power-driven or used for production and processing. Heading 8483 is located at the end of this chapter and is specifically used to classify various mechanical transmission components, such as bearings, gears, clutches, couplings, etc. Although these components do not constitute complete machines, they are indispensable key parts for the operation of mechanical equipment. Heading 8483 covers "Transmission shafts and cranks; bearing housings and plain shaft bearings; gears and gearing; ball or roller screws; gear boxes and other speed changers, including torque converters; flywheels and pulleys, including pulley blocks; clutches and shaft couplings (including universal joints)". This heading concentrates all mechanical elements used to transmit rotary motion or torque, regardless of their material, use or installation position. As one of these, a clutch specifically refers to a device used to connect or disconnect the transmission of power between two shafts, and may be manually, automatically or hydraulically operated. HS code 848360 is a six-digit subheading. The first 2 digits "84" represent Chapter 84, i.e., the major category of machinery and parts; digits 3-4 "83" represent heading 8483, i.e., transmission components such as transmission shafts, bearings, gears, clutches, couplings, etc.; digits 5-6 "60" represent subheading 8483.60, specifically referring to "clutches and shaft couplings (including universal joints)". Therefore, the complete meaning of 848360 is: belonging to Chapter 84 machinery, classified under heading 8483 transmission components, and specifically pointing to the subheading of clutches and shaft couplings. There is no further subdivision under this subheading, and all clutches (except those specially used for specific machines such as automobile clutches, which may be otherwise provided) are generally classified under this code. The reason a clutch is classified under 848360 is that it is essentially a mechanical transmission component used to connect or disconnect power transmission, which conforms to the description of heading 8483 "clutches and shaft couplings". It does not belong to the valves of 8481 or the bearings of 8482, nor to the automobile parts of 8708 (unless specially used for automobiles and meeting the notes). If the clutch is a special part of a certain machine and that machine has an independent heading, it may be classified as a part, but general-purpose clutches are still classified under 848360.

Product name: The Chinese and English names of the declared commodity should accurately reflect the product attributes, such as "clutch", "coupling", or specific types such as "electromagnetic clutch". Use: Explain what kind of machine or equipment the clutch is used for, such as "used for machine tool spindle transmission", "used for ship propulsion systems", etc., which helps determine whether it is general-purpose. Brand: Declare the manufacturer or brand name; if there is no brand, fill in "no brand", which affects price and intellectual property verification. Model: Fill in the specific model or specification of the product, such as "DL-200", "ABC-123", to facilitate identification and classification. Material: The material of the main components, such as "cast iron", "steel", "aluminum alloy", etc., affects classification and tariff rates (for example, certain materials may involve anti-dumping). Working principle: Briefly describe the working method of the clutch, such as "electromagnetic", "hydraulic", "mechanical", which helps confirm the subheading. Whether general-purpose: Declare whether the clutch is a general-purpose component or specially used for a specific machine, which affects whether it is classified as a part. Power/Torque: Rated transmitted power or torque, such as "100kW", "500N·m", reflecting product specifications. Customs declaration example: Product name: Electromagnetic clutch Use: Used for CNC machine tool spindle transmission Brand: XYZ Model: EM-200 Material: Steel and copper coil Working principle: Electromagnetic engagement type Whether general-purpose: General-purpose component Rated torque: 200N·m HS code: 8483600090 Quantity: 10 units Unit price: USD 200 Total price: USD 2000 Origin: China Declaring a clutch and a coupling together incorrectly; although both belong to 848360, their functions differ, and customs may require supplementary explanation. Ignoring the "whether general-purpose" element; if it is a special-purpose part and the machine has an independent heading, it may need to be classified under the machine part code. False declaration of material, such as declaring an electromagnetic clutch containing a copper coil only as "steel", may affect anti-dumping or tariffs. Incorrect or missing model, making it impossible to correspond to the actual item and affecting inspection.

The core basis for classification is the description of heading 8483 in the Import and Export Tariff and the HS Explanatory Notes. A clutch must be used to transmit rotary motion and be capable of actively connecting or disconnecting two shafts. If the clutch is a special part of a certain machine and that machine has a specific listing under another heading in Chapter 84 (such as automobile clutches under 8708), it is classified under that heading first. However, general-purpose clutches, or clutches for machines not specifically listed, are all classified under 848360. At the same time, note that if a clutch is combined with a coupling, it is still classified according to the main function. 848340 Gears and gearing: Gear transmission transmits motion through tooth engagement, while a clutch is used to connect/disconnect and does not change the transmission ratio. If a product has both gear and clutch functions, it must be judged according to the main function. 848350 Flywheels and pulleys: Flywheels store kinetic energy, and pulleys change the transmission direction; neither has a clutching function. A clutch can actively disengage, while flywheels and pulleys are usually fixedly connected. 848390 Other transmission components: This code is the residual subheading of 8483, used for transmission components not otherwise specified. Clutches are specifically named and should not be classified here. 870893 Automobile clutches: Clutches specially used for automobiles or tractors are classified under Chapter 87, while general industrial clutches are classified under 848360. Judgment should be based on use and installation object. 848180 Other valves: Valves control fluids, while clutches control mechanical motion. If the product is a hydraulic clutch, its control valve may be classified separately, but the clutch body is still classified under 848360. Is it clear that the product is a clutch rather than a coupling? Has it been confirmed that the product is a general-purpose component rather than a special-purpose part? Have the exclusion clauses regarding 8483 in the HS Explanatory Notes been checked? Has it been checked whether it belongs to Chapter 87 automobile parts? Have elements such as material and working principle been fully declared?

What is the difference in HS codes between clutches and couplings? Both are classified under subheading 848360, but their functions differ: a clutch can actively connect or disconnect two shafts during operation, while a coupling permanently connects two shafts and only transmits torque. When declaring, the working principle must be accurately described to avoid confusion. If customs questions it, technical drawings or specifications can be provided as evidence. Should automobile clutches be classified under 848360 or 870893? Automobile clutches are usually classified under 870893 (automobile clutches), because Chapter 87 specifically lists automobile parts. However, if the clutch is a general-purpose type that can be used in multiple machines, it is classified under 848360. The key is whether it is specially used for automobiles. It is recommended to consult the notes to Chapter 87 and national subheadings. When classifying an electromagnetic clutch under 848360, what declaration elements require special attention? Electromagnetic clutches require additional declaration of working principle (electromagnetic), voltage, power, etc., in order to distinguish them from mechanical types. The material should include the coil material (such as copper). If it contains an electronic control unit, it may involve 8543, etc., but the clutch body is still classified under 848360. How can I check the import tariff rate for 848360? Tariff rates change, so it is recommended to check the latest rates through the General Administration of Customs website, the single window, or professional databases. Usually, HS code, origin, trade mode, etc. need to be entered. Note that anti-dumping duties, VAT, etc. may be involved and need to be calculated comprehensively. Under which code should clutch parts (such as friction plates) be classified? If clutch parts are general-purpose parts, they are generally classified under 848390 (other transmission components). However, if they are specially used for automobile clutches, they may be classified under 870893. If friction plates are imported separately, judgment should be based on material and use, and they may be classified under 6813 or 848390. How should 848360 and 848340 be distinguished during classification? 848340 is gears and gearing, which transmits motion through tooth engagement and may change speed or direction; 848360 is clutches and couplings, used to connect or disconnect. If a product has both gear and clutch functions, it is classified according to the main function, or judged according to the HS Explanatory Notes. How should the "whether general-purpose" element be filled in during declaration? If the clutch can be independently installed on multiple machines, fill in "general-purpose"; if it is only applicable to a specific machine (such as a certain model of machine tool), fill in "special-purpose". Special-purpose parts may need to be classified as machine parts, but if the machine has no independent heading, they are still classified under 848360. When exporting clutches to different countries, are HS codes consistent? The first six digits of the HS code are unified globally, but countries may subdivide the last four digits differently. For example, the U.S. HTSUS may be 8483.60.4000, etc. When exporting, the destination country code must be confirmed and its declaration requirements complied with.