HS Code 84: Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof

Q: Is HS code 84 the same in every country?

Yes — HS code 84 is part of the WCO Harmonized System and is the same in every WCO member country at the 6-digit level. Beyond 6 digits, each country extends the code under its own system (e.g. HTSUS in the US, CN/TARIC in the EU, HSK in Korea, CCCHS in China) for national tariff rates and trade statistics. To see how a specific country classifies this code, select a country.

Q: Which WCO edition does HS code 84 belong to, and has it been reclassified?

The Harmonized System is maintained by the World Customs Organization (WCO) and revised approximately every five years. The current edition is HS 2022, which replaced HS 2017 on 1 January 2022. Codes are added, merged, or split between editions to reflect new products and trade patterns, so a code valid in one edition may not exist or may mean something different in another.

Q: How do I find the correct country-specific version of HS code 84?

Beyond the international 6-digit level, each country adds its own digits — the US extends to 10 digits (HTSUS), the EU to 8 or 10 (CN/TARIC), China to 13 (CCCHS), Korea to 10 (HSK), Japan to 9, and so on. To find the full code used by a specific country, select a country in TradeInt's HS Code Tool and search for 84.

What is HS Code 84

HS Code 84 covers Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof. It is one of the 96 chapters of the WCO Harmonized System, sitting in Section XVI (Machinery and mechanical appliances; electrical equipment; parts thereof; sound recorders and reproducers, television image and sound recorders and reproducers, and parts and accessories of such articles). The two digits "84" are the chapter level — every 4-digit heading and 6-digit subheading starting with "84" belongs here.

Explore global 2026 latest import export trade data and shipment records for Machinery on TradeInt global trade data platform

What does HS Code 84 Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof Cover?

Section XVI

Chapters (84-85) Machinery and mechanical appliances; electrical equipment; parts thereof; sound recorders and reproducers, television image and sound recorders and reproducers, and parts and accessories of such articles

Chapter 84

Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof

HS Code 8401

Nuclear reactors; fuel elements (cartridges), non-irradiated, for nuclear reactors, machinery and apparatus for isotopic separation

HS Code 8402

Boilers; steam or other vapour generating (other than central heating hot water boilers, capable also of producing low pressure steam), super heated water boilers

HS Code 8403

Central heating boilers; excluding those of heading no. 8402

HS Code 8404

Auxiliary plant for use with boilers of heading no. 8402 or 8403; e.g. economisers, super-heaters, soot removers, gas recoverers), condensers for steam or other vapour power units

HS Code 8405

Generators for producer or water gas with or without their purifiers acetylene gas generators and similar water process gas generators, with or without their purifiers

HS Code 8406

Turbines; steam and other vapour turbines

HS Code 8407

Reciprocating or rotary internal combustion piston engines

HS Code 8408

Compression-ignition internal combustion piston engines (diesel or semi-diesel engines)

HS Code 8409

Parts suitable for use solely or principally with the engines of heading no. 8407 or 8408

HS Code 8410

Turbines; hydraulic water wheels and regulators therefor

HS Code 8411

Turbo-jets, turbo-propellers and other gas turbines

HS Code 8412

Engines and motors; n.e.c. (e.g. reaction engines, hydraulic power engines, pneumatic power engines)

HS Code 8413

Pumps; for liquids, whether or not fitted with measuring device, liquid elevators

HS Code 8414

Air or vacuum pumps, air or other gas compressors and fans; ventilating or recycling hoods incorporating a fan; gas-tight biological safety cabinets whether or not fitted with filters

HS Code 8415

Air 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

HS Code 8416

Furnace burners for liquid fuel, for pulverised solid fuel or for gas; mechanical grates, mechanical ash dischargers and similar appliances

HS Code 8417

Furnaces and ovens; industrial or laboratory, including incinerators, non-electric

HS Code 8418

Refrigerators, freezers and other refrigerating or freezing equipment, electric or other; heat pumps other than air conditioning machines of heading no. 8415

HS Code 8419

Machinery, plant (not domestic), or laboratory equipment; electrically heated or not, (excluding items in 85.14) for the treatment of materials by a process involving change of temperature; including instantaneous or non electric storage water heaters

HS Code 8420

Machines; calendering or other rolling machines, for other than metal or glass and cylinders therefor

HS Code 8421

Centrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus for liquids or gases

HS Code 8422

Dish washing machines; machinery for cleaning, drying, filling, closing, sealing, capsuling or labelling bottles, cans, boxes, bags, etc, machinery for aerating beverages

HS Code 8423

Weighing machines; excluding balances of a sensitivity of 5cg or better, including weight operated counting or checking machines and weights of all kinds

HS Code 8424

Mechanical appliances for projecting, dispersing or spraying liquids or powders; fire extinguishers, spray guns, steam, sand blasting machines

HS Code 8425

Pulley tackle and hoists other than skip hoists; winches and capstans; jacks

HS Code 8426

Derricks, cranes, including cable cranes, mobile lifting frames, straddle carriers and works trucks fitted with a crane

HS Code 8427

Fork-lift and other works trucks; fitted with lifting or handling equipment

HS Code 8428

Lifting, handling, loading or unloading machinery; n.e.c. in heading no. 8425, 8426 or 8427 (e.g. lifts, escalators, conveyors, teleferics)

HS Code 8429

Bulldozers, graders, levellers, scrapers, angledozers, mechanical shovels, excavators, shovel loaders, tamping machines and road rollers, self-propelled

HS Code 8430

Moving, grading, levelling, scraping, excavating, tamping, compacting, extracting or boring machinery, for earth, minerals, or ores; pile drivers and extractors; snow ploughs and snow blowers

HS Code 8431

Machinery parts; used solely or principally with the machinery of heading no. 8425 to 8430

HS Code 8432

Agricultural, horticultural or forestry machinery for soil preparation or cultivation; lawn or sports-ground rollers

HS Code 8433

Harvesting and threshing machinery, straw and fodder balers, grass or hay mowers; machines for cleaning, sorting or grading eggs, fruit or other agricultural produce, other than machinery of heading no 8437

HS Code 8434

Milking machines and dairy machinery

HS Code 8435

Presses, crushers and similar machinery; used in the manufacture of wine, cider, fruit juices or similar beverages

HS Code 8436

Agricultural, horticultural, forestry, poultry-keeping, bee-keeping machinery; including germination plant fitted with mechanical or thermal equipment; poultry incubators and brooders

HS Code 8437

Machines for cleaning, sorting, grading seed, grain, dried leguminous vegetables; machinery used in the milling industry for the working of cereals or dried leguminous vegetables, not farm type machinery

HS Code 8438

Machinery n.e.c. in this chapter, for the industrial preparation or manufacture of food or drink; other than machinery for extraction or preparation of animal or fixed vegetable or microbial fats or oils

HS Code 8439

Machinery; for making pulp of fibrous cellulosic material, or for making or finishing paper or paperboard

HS Code 8440

Book-binding machinery; including book-sewing machines

HS Code 8441

Machines; for making up paper pulp, paper or paperboard, including cutting machines of all kinds

HS Code 8442

Machinery, apparatus and equipment (excluding machines of headings 8456 to 8465) for preparing or making printing components; plates, cylinders and other printing components; lithographic stones prepared for printing purposes

HS Code 8443

Printing 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

HS Code 8444

Textile machinery; for extruding, drawing, texturing or cutting man-made textile materials

HS Code 8445

Textile machinery; spinning, doubling, twisting machines, textile reeling or winding machines and machines for preparing textile yarns for use on machines of heading no. 8446 and 8447

HS Code 8446

Weaving machines (looms)

HS Code 8447

Knitting machines, stitch-bonding machines and machines for making gimped yarn, tulle, lace, embroidery, trimmings, braid or net and machines for tufting

HS Code 8448

Machinery, auxiliary; for use with machines of heading no. 8444 to 8447 (e.g. dobbies, jacquards, automatic stop motions, shuttle changing mechanisms) parts, accessories for machines of heading no. 8444, 8447

HS Code 8449

Machinery; for manufacture or finishing felt or non-wovens in the piece or in shapes, including machinery for making felt hats, blocks for making hats

HS Code 8450

Household or laundry-type washing machines; including machines which both wash and dry

HS Code 8451

Machinery (not of heading no. 8450) for washing, cleaning, wringing, drying, ironing, pressing, bleaching, dyeing, dressing, finishing, coating or impregnating textile yarn, fabrics or made up articles

HS Code 8452

Sewing machines; other than book-sewing machines of heading no. 8440; furniture, bases and covers specially designed for sewing machines; sewing machine needles

HS Code 8453

Machinery 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

HS Code 8454

Converters, ladles, ingot moulds and casting machines; of a kind used metallurgy or in metal foundries

HS Code 8455

Metal-rolling mills and rolls therefor

HS Code 8456

Machine-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

HS Code 8457

Machining centres, unit construction machines (single station) and multi-station transfer machines for working metal

HS Code 8458

Lathes for removing metal

HS Code 8459

Machine-tools; (including way-type unit head machines) for drilling, boring, milling, threading or tapping by removing metal, other than lathes of heading no. 8458

HS Code 8460

Machine-tools; for deburring, sharpening, grinding, honing, lapping, polishing or otherwise finishing metal, sintered metal carbides or cermets by means of grinding stones, abrasives or polishing products

HS Code 8461

Machine-tools; for planing, shaping, slotting, broaching, gear cutting and grinding, finishing, sawing, cutting off and other tools working by removing metal, sintered metal carbides or cermets n.e.c.

HS Code 8462

Machine-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,

HS Code 8463

Machine-tools; n.e.c. for working metal, sintered metal carbides or cermets without removing material

HS Code 8464

Machine-tools; for working stone, ceramics, concrete, asbestos-cement or like mineral materials or for cold working glass

HS Code 8465

Machine-tools; (including machines for nailing, stapling, glueing or otherwise assembling) for working wood, cork, bone, hard plastics or rubber or similar hard materials

HS Code 8466

Parts & accessories suited for use only/mainly with machines of headings 8456-8465, including work/tool holders, self-opening dieheads, dividing heads & other special attachments for the machines; tool holders for any type of tool for working in the hand

HS Code 8467

Tools; for working in the hand, pneumatic, hydraulic or with self-contained electric or non-electric motor

HS Code 8468

Machinery and apparatus for soldering, brazing, welding, whether or not capable of cutting, other than those of heading no. 8515; gas-operated surface tempering machines and appliances

HS Code 8470

Calculating machines and pocket-size data recording, reproducing and displaying machines with calculating functions; accounting machines, postage-franking machines, ticket-issuing machines and similar, incorporating a calculating device; cash registers

HS Code 8471

Automatic 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

HS Code 8472

Office machines; not elsewhere classified

HS Code 8473

Machinery; parts 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

HS Code 8474

Machinery for sorting, screening, separating, washing, crushing, grinding, mixing or kneading earth, stone, ores in solid form, shaping, moulding machinery for solid mineral fuels

HS Code 8475

Machines; for assembling electric or electronic lamps, tubes, valves, flashbulbs, in glass envelopes, machines for manufacturing or hot working glass or glassware

HS Code 8476

Automatic goods-vending machines (e.g. postage stamp, cigarette, food or beverage machines), including money-changing machines

HS Code 8477

Machinery; for working rubber or plastics or for the manufacture of products from these materials, n.e.c. in this chapter

HS Code 8478

Machinery; for preparing or making up tobacco, n.e.c. in this chapter

HS Code 8479

Machinery and mechanical appliances; having individual functions, n.e.c. in this chapter

HS Code 8480

Moulding boxes for metal foundry, moulding patterns, moulds for metals (excluding ingot moulds), metal carbides, glass, mineral materials, rubber or plastics

HS Code 8481

Taps, cocks, valves and similar appliances for pipes, boiler shells, tanks, vats or the like, including pressure-reducing valves and thermostatically controlled valves

HS Code 8482

Ball or roller bearings

HS Code 8483

Transmission shafts (including cam and crank) and cranks; bearing housings and plain shaft bearings; gears and gearing; ball or roller screws; gear boxes and other speed changers; flywheels and pulleys; clutches and shaft couplings

HS Code 8484

Gaskets 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

HS Code 8485

Machines for additive manufacturing

HS Code 8486

Machines 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 & apparatus specified in note 11 (C) to this Chapter

HS Code 8487

Machinery parts; not containing electrical connectors, insulators, coils, contacts or other electrical features, n.e.c. in this chapter

Click any HS code above to see live 2026 latest Machinery trade data including exporters, importers, and shipment volumes.

What HS Codes for Machinery Do Not Cover

Chapter 84 covers nuclear reactors, boilers, machinery, and mechanical appliances. Goods frequently misclassified here but that belong elsewhere include:

Electrical machinery and equipment

Chapter 85

Vehicles, aircraft, ships

Chapters 86–89

Optical, medical, and measuring instruments

Chapter 90

Arms and ammunition

Chapter 93

This list highlights common classification errors only — it is not exhaustive. For binding classification, work with a licensed customs broker or qualified trade compliance professional.

Related HS Codes under Machinery HS 84

HS Code 8401

Nuclear reactors; fuel elements (cartridges), non-irradiated, for nuclear reactors, machinery and apparatus for isotopic separation

HS Code 8402

Boilers; steam or other vapour generating (other than central heating hot water boilers, capable also of producing low pressure steam), super heated water boilers

HS Code 8403

Central heating boilers; excluding those of heading no. 8402

HS Code 8404

Auxiliary plant for use with boilers of heading no. 8402 or 8403; e.g. economisers, super-heaters, soot removers, gas recoverers), condensers for steam or other vapour power units

HS Code 8405

Generators for producer or water gas with or without their purifiers acetylene gas generators and similar water process gas generators, with or without their purifiers

HS Code 8406

Turbines; steam and other vapour turbines

HS Code 8407

Reciprocating or rotary internal combustion piston engines

HS Code 8408

Compression-ignition internal combustion piston engines (diesel or semi-diesel engines)

HS Code 8409

Parts suitable for use solely or principally with the engines of heading no. 8407 or 8408

HS Code 8410

Turbines; hydraulic water wheels and regulators therefor

Frequently Asked Questions

What is HS code 84?

HS code 84 covers Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof, one of the chapter 84 of the World Customs Organization (WCO) Harmonized System. It is the broadest level of HS classification, grouping all products of this type before they are narrowed down by more specific 4-digit headings and 6-digit subheadings.

Is HS code 84 the same in every country?

Which WCO edition does HS code 84 belong to, and has it been reclassified?

How do I find the correct country-specific version of HS code 84?