Chapter (2-digit)
84Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof
原子炉、ボイラー及び機械類並びにこれらの部分品
HS code 84 is a Chapter (2-digit) classification number. In Japan's trade statistics (published by Ministry of Finance), it represents import/export items classified as “Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof”. This code has 84 subcategories defined below it.
Latest trade statistics
In May 2026, Japan's imports under HS code 84 (Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof) totaled ¥1T (YoY +19.8%), with a volume of 218,271,418 NO at about ¥5,277/NO. The top import sources are People's Republic of China (41.1%), United States of America (18.0%), Republic of Korea (4.3%). Exports totaled ¥2T (YoY +6.7%), with a volume of 347,712,304 NO at about ¥4,615/NO. The top export destinations are United States of America (23.3%), People's Republic of China (22.8%), Taiwan (8.3%).
Export (May 2026)
¥2T
YoY: +6.7%
Qty: 347,712,304 NO
Unit price: ¥4,615/NO
Import (May 2026)
¥1T
YoY: +19.8%
Qty: 218,271,418 NO
Unit price: ¥5,277/NO
Top export destinations (2025)
| # | Country | Value | Share | Qty | Unit price |
|---|---|---|---|---|---|
| 1 | United States of America | ¥5T | 23.3% | 462,715,161 | ¥9,832 |
| 2 | People's Republic of China | ¥4T | 22.8% | 1,127,036,873 | ¥3,954 |
| 3 | Taiwan | ¥2T | 8.3% | 55,603,777 | ¥29,087 |
| 4 | Republic of Korea | ¥1T | 7.0% | 129,461,197 | ¥10,544 |
| 5 | Thailand | ¥706B | 3.6% | 486,186,875 | ¥1,453 |
Top import sources (2025)
| # | Country | Value | Share | Qty | Unit price |
|---|---|---|---|---|---|
| 1 | People's Republic of China | ¥5T | 41.1% | 1,124,862,682 | ¥4,542 |
| 2 | United States of America | ¥2T | 18.0% | 52,850,620 | ¥42,230 |
| 3 | Republic of Korea | ¥530B | 4.3% | 120,359,511 | ¥4,404 |
| 4 | Taiwan | ¥530B | 4.3% | 62,251,075 | ¥8,510 |
| 5 | Thailand | ¥500B | 4.0% | 584,592,344 | ¥856 |
Subcategories84items
Heading (4-digit)
8401Nuclear reactors; fuel elements (cartridges), non-irradiated, for nuclear reactors; machinery and apparatus for isotopic separation:
Heading (4-digit)
8402Steam or other vapour generating boilers (other than central heating hot water boilers capable also of producing low pressure steam); super-heated water boilers:
Heading (4-digit)
8403Central heating boilers other than those of heading 84.02:
Heading (4-digit)
8404Auxiliary plant for use with boilers of heading 84.02 or 84.03 (for example, economisers, super-heaters, soot removers, gas recoverers); condensers for steam or other vapour power units:
Heading (4-digit)
8405Producer gas or water gas generators, with or without their purifiers; acetylene gas generators and similar water process gas generators, with or without their purifiers:
Heading (4-digit)
8406Steam turbines and other vapour turbines:
Heading (4-digit)
8407Spark-ignition reciprocating or rotary internal combustion piston engines:
Heading (4-digit)
8408Compression-ignition internal combustion piston engines (diesel or semi-diesel engines):
Heading (4-digit)
8409Parts suitable for use solely or principally with the engines of heading 84.07 or 84.08:
Heading (4-digit)
8410Hydraulic turbines, water wheels, and regulators therefor:
Heading (4-digit)
8411Turbo-jets, turbo-propellers and other gas turbines:
Heading (4-digit)
8412Other engines and motors:
Heading (4-digit)
8413Pumps for liquids, whether or not fitted with a measuring device; liquid elevators:
Heading (4-digit)
8414Air or vacuum pumps, air or other gas compressors and fans; ventilating or recycling hoods incorporating a fan, whether or not fitted with filters; gas-tight biological safety cabinets, whether or not fitted with filters:
Heading (4-digit)
8415Air conditioning machines, comprising a motor-driven fan and elements for changing the temperature and humidity, including those machines in which the humidity cannot be separately regulated:
Heading (4-digit)
8416Furnace burners for liquid fuel, for pulverised solid fuel or for gas; mechanical stokers, including their mechanical grates, mechanical ash dischargers and similar appliances:
Heading (4-digit)
8417Industrial or laboratory furnaces and ovens, including incinerators, non-electric:
Heading (4-digit)
8418Refrigerators, freezers and other refrigerating or freezing equipment, electric or other; heat pumps other than air conditioning machines of heading 84.15:
Heading (4-digit)
8419Machinery, plant or laboratory equipment, whether or not electrically heated (excluding furnaces, ovens and other equipment of heading 85.14), for the treatment of materials by a process involving a change of temperature such as heating, cooking, roasting, distilling, rectifying, sterilising, pasteurising, steaming, drying, evaporating, vaporising, condensing or cooling, other than machinery or plant of a kind used for domestic purposes; instantaneous or storage water heaters, non-electric:
Heading (4-digit)
8420Calendering or other rolling machines, other than for metals or glass, and cylinders therefor:
Heading (4-digit)
8421Centrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus, for liquids or gases:
Heading (4-digit)
8422Dish washing machines; machinery for cleaning or drying bottles or other containers; machinery for filling, closing, sealing or labelling bottles, cans, boxes, bags or other containers; machinery for capsuling bottles, jars, tubes and similar containers; other packing or wrapping machinery (including heat-shrink wrapping machinery); machinery for aerating beverages:
Heading (4-digit)
8423Weighing machinery (excluding balances of a sensitivity of 5 cg or better), including weight operated counting or checking machines; weighing machine weights of all kinds:
Heading (4-digit)
8424Mechanical appliances (whether or not hand-operated) for projecting, dispersing or spraying liquids or powders; fire extinguishers, whether or not charged; spray guns and similar appliances; steam or sand blasting machines and similar jet projecting machines:
Heading (4-digit)
8425Pulley tackle and hoists other than skip hoists; winches and capstans; jacks:
Heading (4-digit)
8426Ships' derricks; cranes, including cable cranes; mobile lifting frames, straddle carriers and works trucks fitted with a crane:
Heading (4-digit)
8427Fork-lift trucks; other works trucks fitted with lifting or handling equipment:
Heading (4-digit)
8428Other lifting, handling, loading or unloading machinery (for example, lifts, escalators, conveyors, teleferics):
Heading (4-digit)
8429Self-propelled bulldozers, angledozers, graders, levellers, scrapers, mechanical shovels, excavators, shovel loaders, tamping machines and road rollers:
Heading (4-digit)
8430Other moving, grading, levelling, scraping, excavating, tamping, compacting, extracting or boring machinery, for earth, minerals or ores; pile-drivers and pile-extractors; snow-ploughs and snow-blowers:
Heading (4-digit)
8431Parts suitable for use solely or principally with the machinery of headings 84.25 to 84.30:
Heading (4-digit)
8432Agricultural, horticultural or forestry machinery for soil preparation or cultivation; lawn or sports-ground rollers:
Heading (4-digit)
8433Harvesting or threshing machinery, including straw or fodder balers; grass or hay mowers; machines for cleaning, sorting or grading eggs, fruit or other agricultural produce, other than machinery of heading 84.37:
Heading (4-digit)
8434Milking machines and dairy machinery:
Heading (4-digit)
8435Presses, crushers and similar machinery used in the manufacture of wine, cider, fruit juices or similar beverages:
Heading (4-digit)
8436Other agricultural, horticultural, forestry, poultry-keeping or bee-keeping machinery, including germination plant fitted with mechanical or thermal equipment; poultry incubators and brooders:
Heading (4-digit)
8437Machines for cleaning, sorting or grading seed, grain or dried leguminous vegetables; machinery used in the milling industry or for the working of cereals or dried leguminous vegetables, other than farm-type machinery:
Heading (4-digit)
8438Machinery, not specified or included elsewhere in this Chapter, for the industrial preparation or manufacture of food or drink, other than machinery for the extraction or preparation of animal or fixed vegetable or microbial fats or oils:
Heading (4-digit)
8439Machinery for making pulp of fibrous cellulosic material or for making or finishing paper or paperboard:
Heading (4-digit)
8440Book-binding machinery, including book-sewing machines:
Heading (4-digit)
8441Other machinery for making up paper pulp, paper or paperboard, including cutting machines of all kinds:
Heading (4-digit)
8442Machinery, apparatus and equipment (other than the machines of headings 84.56 to 84.65) for preparing or making plates, cylinders or other printing components; plates, cylinders and other printing components; plates, cylinders and lithographic stones, prepared for printing purposes (for example, planed, grained or polished):
Heading (4-digit)
8443Printing machinery used for printing by means of plates, cylinders and other printing components of heading 84.42; other printers, copying machines and facsimile machines, whether or not combined; parts and accessories thereof:
Heading (4-digit)
8445Machines for preparing textile fibres; spinning, doubling or twisting machines and other machinery for producing textile yarns; textile reeling or winding (including weft-winding) machines and machines for preparing textile yarns for use on the machines of heading 84.46 or 84.47:
Heading (4-digit)
8446Weaving machines (looms):
Heading (4-digit)
8447Knitting machines, stitch-bonding machines and machines for making gimped yarn, tulle, lace, embroidery, trimmings, braid or net and machines for tufting:
Heading (4-digit)
8448Auxiliary machinery for use with machines of heading 84.44, 84.45, 84.46 or 84.47 (for example, dobbies, Jacquards, automatic stop motions, shuttle changing mechanisms); parts and accessories suitable for use solely or principally with the machines of this heading or of heading 84.44, 84.45, 84.46 or 84.47 (for example, spindles and spindle flyers, card clothing, combs, extruding nipples, shuttles, healds and heald-frames, hosiery needles):
Heading (4-digit)
8450Household or laundry-type washing machines, including machines which both wash and dry:
Heading (4-digit)
8451Machinery (other than machines of heading 84.50) for washing, cleaning, wringing, drying, ironing, pressing (including fusing presses), bleaching, dyeing, dressing, finishing, coating or impregnating textile yarns, fabrics or made up textile articles and machines for applying the paste to the base fabric or other support used in the manufacture of floor coverings such as linoleum; machines for reeling, unreeling, folding, cutting or pinking textile fabrics:
Heading (4-digit)
8452Sewing machines, other than book-sewing machines of heading 84.40; furniture, bases and covers specially designed for sewing machines; sewing machine needles:
Heading (4-digit)
8453Machinery for preparing, tanning or working hides, skins or leather or for making or repairing footwear or other articles of hides, skins or leather, other than sewing machines:
Heading (4-digit)
8454Converters, ladles, ingot moulds and casting machines, of a kind used in metallurgy or in metal foundries:
Heading (4-digit)
8455Metal-rolling mills and rolls therefor:
Heading (4-digit)
8456Machine-tools for working any material by removal of material, by laser or other light or photon beam, ultrasonic, electro-discharge, electro-chemical, electron beam, ionic-beam or plasma arc processes; water-jet cutting machines:
Heading (4-digit)
8457Machining centres, unit construction machines (single station) and multi-station transfer machines, for working metal:
Heading (4-digit)
8458Lathes (including turning centres) for removing metal:
Heading (4-digit)
8459Machine-tools (including way-type unit head machines) for drilling, boring, milling, threading or tapping by removing metal, other than lathes (including turning centres) of heading 84.58:
Heading (4-digit)
8460Machine-tools for deburring, sharpening, grinding, honing, lapping, polishing or otherwise finishing metal or cermets by means of grinding stones, abrasives or polishing products, other than gear cutting, gear grinding or gear finishing machines of heading 84.61:
Heading (4-digit)
8461Machine-tools for planing, shaping, slotting, broaching, gear cutting, gear grinding or gear finishing, sawing, cutting-off and other machine-tools working by removing metal or cermets, not elsewhere specified or included:
Heading (4-digit)
8462Machine-tools (including presses) for working metal by forging, hammering or die forging (excluding rolling mills); machine-tools (including presses, slitting lines and cut-to-length lines) for working metal by bending, folding, straightening, flattening, shearing, punching, notching or nibbling (excluding draw-benches); presses for working metal or metal carbides, not specified above:
Heading (4-digit)
8463Other machine-tools for working metal or cermets, without removing material:
Heading (4-digit)
8464Machine-tools for working stone, ceramics, concrete, asbestos-cement or like mineral materials or for cold working glass:
Heading (4-digit)
8465Machine-tools (including machines for nailing, stapling, glueing or otherwise assembling) for working wood, cork, bone, hard rubber, hard plastics or similar hard materials:
Heading (4-digit)
8466Parts and accessories suitable for use solely or principally with the machines of headings 84.56 to 84.65, including work or tool holders, self-opening dieheads, dividing heads and other special attachments for the machines; tool holders for any type of tool for working in the hand:
Heading (4-digit)
8467Tools for working in the hand, pneumatic, hydraulic or with self-contained electric or non-electric motor:
Heading (4-digit)
8468Machinery and apparatus for soldering, brazing or welding, whether or not capable of cutting, other than those of heading 85.15; gas-operated surface tempering machines and appliances:
Heading (4-digit)
8470Calculating machines and pocket-size data recording, reproducing and displaying machines with calculating functions; accounting machines, postage-franking machines, ticket-issuing machines and similar machines, incorporating a calculating device; cash registers:
Heading (4-digit)
8471Automatic data processing machines and units thereof; magnetic or optical readers, machines for transcribing data onto data media in coded form and machines for processing such data, not elsewhere specified or included:
Heading (4-digit)
8472Other office machines (for example, hectograph or stencil duplicating machines, addressing machines, automatic banknote dispensers, coin-sorting machines, coin-counting or wrapping machines, pencil-sharpening machines, perforating or stapling machines):
Heading (4-digit)
8473Parts and accessories (other than covers, carrying cases and the like) suitable for use solely or principally with machines of headings 84.70 to 84.72:
Heading (4-digit)
8474Machinery for sorting, screening, separating, washing, crushing, grinding, mixing or kneading earth, stone, ores or other mineral substances, in solid (including powder or paste) form; machinery for agglomerating, shaping or moulding solid mineral fuels, ceramic paste, unhardened cements, plastering materials or other mineral products in powder or paste form; machines for forming foundry moulds of sand:
Heading (4-digit)
8475Machines for assembling electric or electronic lamps, tubes or valves or flashbulbs, in glass envelopes; machines for manufacturing or hot working glass or glassware:
Heading (4-digit)
8476Automatic goods-vending machines (for example, postage stamp, cigarette, food or beverage machines), including money-changing machines:
Heading (4-digit)
8477Machinery for working rubber or plastics or for the manufacture of products from these materials, not specified or included elsewhere in this Chapter:
Heading (4-digit)
8478Machinery for preparing or making up tobacco, not specified or included elsewhere in this Chapter:
Heading (4-digit)
8479Machines and mechanical appliances having individual functions, not specified or included elsewhere in this Chapter:
Heading (4-digit)
8480Moulding boxes for metal foundry; mould bases; moulding patterns; moulds for metal (other than ingot moulds), metal carbides, glass, mineral materials, rubber or plastics:
Heading (4-digit)
8481Taps, cocks, valves and similar appliances for pipes, boiler shells, tanks, vats or the like, including pressure-reducing valves and thermostatically controlled valves:
Heading (4-digit)
8482Ball or roller bearings:
Heading (4-digit)
8483Transmission shafts (including cam shafts and crank 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):
Heading (4-digit)
8484Gaskets and similar joints of metal sheeting combined with other material or of two or more layers of metal; sets or assortments of gaskets and similar joints, dissimilar in composition, put up in pouches, envelopes or similar packings; mechanical seals:
Heading (4-digit)
8485Machines for additive manufacturing:
Heading (4-digit)
8486Machines and apparatus of a kind used solely or principally for the manufacture of semiconductor boules or wafers, semiconductor devices, electronic integrated circuits or flat panel displays; machines and apparatus specified in Note 11 (C) to this Chapter; parts and accessories:
Heading (4-digit)
8487Machinery parts, not containing electrical connectors, insulators, coils, contacts or other electrical features, not specified or included elsewhere in this Chapter:
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