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Home / Section XVI / HS 84

HS 84

Chapter

Machinery and mechanical appliances, boilers, nuclear reactors; parts thereof

HS Code 84 classifies "Machinery and mechanical appliances, boilers, nuclear reactors, parts thereof" under Section XVI (Machinery and Mechanical Appliances; Electrical Equipment). This chapter-level code is used internationally for customs classification, tariff determination, and trade statistics.

Classification Details

HS Code84
DescriptionMachinery and mechanical appliances, boilers, nuclear reactors; parts thereof
LevelChapter (2-digit)
SectionXVI — Machinery and Mechanical Appliances; Electrical Equipment
Chapter84

🇺🇸 US Import Duty

Average Duty Rate2%
Duty Range0-6%
NotesMachinery: computers 0%, engines 2.5%, turbines 2-3%
Free Trade AgreementsITA: 0% for many electronics. Most FTAs: 0%

Rates are approximate and based on MFN (Most Favored Nation) tariffs. Actual rates may vary by specific product classification. Always verify with USITC for official rates.

Classification Guide

When classifying goods under HS 84, ensure the product matches the specific description. As a chapter-level code, this is a broad category. You'll need to narrow down to a 4-digit heading or 6-digit subheading for customs declaration.

Trade Context

Section XVI covers machinery, electrical equipment, and electronics — the highest value trade category.

Regulatory Note

Electronics and machinery represent the largest share of global trade. Export controls may apply to dual-use technology.

🇺🇸 US Import Document Checklist

Documents required when importing products under HS 84 into the United States.

Required for All Imports

☑Commercial InvoiceCBP
Detailed invoice from the seller showing product description, quantity, unit price, total value, and terms of sale (Incoterms).
☑Packing ListCBP
Itemized list of contents in each package, including weights, dimensions, and marks/numbers matching the shipping containers.
☑Bill of Lading (B/L) or Airway BillCarrier
Transport document issued by the carrier confirming receipt of goods for shipment. Acts as a contract of carriage and receipt.
☑CBP Entry Summary (Form 7501)CBP
The formal customs declaration filed with US Customs and Border Protection for all commercial imports.
☑Importer Security Filing (ISF/10+2)CBP
Must be filed at least 24 hours before ocean cargo is loaded. Required for all ocean shipments to the US.
☑Customs BondCBP
A financial guarantee ensuring payment of duties, taxes, and fees. Required for commercial shipments over $2,500.

Product-Specific Requirements

📋FCC Declaration of ConformityMay be required

Required for electronic/electrical equipment that may emit radio frequency energy.

Agency: FCC

📋UL/NRTL CertificationMay be required

Safety certification for electrical equipment. Not legally required but practically necessary for sale.

Agency: OSHA/NRTL

📋Energy Star / DOE ComplianceMay be required

Certain appliances must meet Department of Energy efficiency standards.

Agency: DOE

FTA Certificate of Origin (for preferential rates)

🤝USMCA Certificate of Origin — self-certification by importer, exporter, or producer. No prescribed format.
🤝Korea-US FTA Certificate of Origin — can be issued by importer, exporter, or producer.

This checklist is for general guidance only. Actual requirements may vary based on specific product, country of origin, and current regulations. Always consult with a licensed customs broker or the relevant agency for official requirements.

Sub-Classifications

84.01Nuclear reactors; fuel elements (cartridges), non-irradiated, for nuclear reactors, machinery and apparatus for isotopic separationHeading84.02Boilers; steam or other vapour generating (other than central heating hot water boilers, capable also of producing low pressure steam), super heated water boilersHeading84.03Central heating boilers; excluding those of heading no. 8402Heading84.04Auxiliary 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 unitsHeading84.05Generators for producer or water gas with or without their purifiers acetylene gas generators and similar water process gas generators, with or without their purifiersHeading84.06Turbines; steam and other vapour turbinesHeading84.07Reciprocating or rotary internal combustion piston enginesHeading84.08Compression-ignition internal combustion piston engines (diesel or semi-diesel engines)Heading84.09Parts suitable for use solely or principally with the engines of heading no. 8407 or 8408Heading84.10Turbines; hydraulic water wheels and regulators thereforHeading84.11Turbo-jets, turbo-propellers and other gas turbinesHeading84.12Engines and motors; n.e.c. (e.g. reaction engines, hydraulic power engines, pneumatic power engines)Heading84.13Pumps; for liquids, whether or not fitted with measuring device, liquid elevatorsHeading84.14Air 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 filtersHeading84.15Air 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 regulatedHeading84.16Furnace burners for liquid fuel, for pulverised solid fuel or for gas; mechanical grates, mechanical ash dischargers and similar appliancesHeading84.17Furnaces and ovens; industrial or laboratory, including incinerators, non-electricHeading84.18Refrigerators, freezers and other refrigerating or freezing equipment, electric or other; heat pumps other than air conditioning machines of heading no. 8415Heading84.19Machinery, 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 heatersHeading84.20Machines; calendering or other rolling machines, for other than metal or glass and cylinders thereforHeading84.21Centrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus for liquids or gasesHeading84.22Dish washing machines; machinery for cleaning, drying, filling, closing, sealing, capsuling or labelling bottles, cans, boxes, bags, etc, machinery for aerating beveragesHeading84.23Weighing machines; excluding balances of a sensitivity of 5cg or better, including weight operated counting or checking machines and weights of all kindsHeading84.24Mechanical appliances for projecting, dispersing or spraying liquids or powders; fire extinguishers, spray guns, steam, sand blasting machinesHeading84.25Pulley tackle and hoists other than skip hoists; winches and capstans; jacksHeading84.26Derricks, cranes, including cable cranes, mobile lifting frames, straddle carriers and works trucks fitted with a craneHeading84.27Fork-lift and other works trucks; fitted with lifting or handling equipmentHeading84.28Lifting, handling, loading or unloading machinery; n.e.c. in heading no. 8425, 8426 or 8427 (e.g. lifts, escalators, conveyors, teleferics)Heading84.29Bulldozers, graders, levellers, scrapers, angledozers, mechanical shovels, excavators, shovel loaders, tamping machines and road rollers, self-propelledHeading84.30Moving, grading, levelling, scraping, excavating, tamping, compacting, extracting or boring machinery, for earth, minerals, or ores; pile drivers and extractors; snow ploughs and snow blowersHeading84.31Machinery parts; used solely or principally with the machinery of heading no. 8425 to 8430Heading84.32Agricultural, horticultural or forestry machinery for soil preparation or cultivation; lawn or sports-ground rollersHeading84.33Harvesting 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 8437Heading84.34Milking machines and dairy machineryHeading84.35Presses, crushers and similar machinery; used in the manufacture of wine, cider, fruit juices or similar beveragesHeading84.36Agricultural, horticultural, forestry, poultry-keeping, bee-keeping machinery; including germination plant fitted with mechanical or thermal equipment; poultry incubators and broodersHeading84.37Machines 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 machineryHeading84.38Machinery 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 oilsHeading84.39Machinery; for making pulp of fibrous cellulosic material, or for making or finishing paper or paperboardHeading84.40Book-binding machinery; including book-sewing machinesHeading84.41Machines; for making up paper pulp, paper or paperboard, including cutting machines of all kindsHeading84.42Machinery, 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 purposesHeading84.43Printing 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 thereofHeading84.44Textile machinery; for extruding, drawing, texturing or cutting man-made textile materialsHeading84.45Textile 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 8447Heading84.46Weaving machines (looms)Heading84.47Knitting machines, stitch-bonding machines and machines for making gimped yarn, tulle, lace, embroidery, trimmings, braid or net and machines for tuftingHeading84.48Machinery, 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, 8447Heading84.49Machinery; for manufacture or finishing felt or non-wovens in the piece or in shapes, including machinery for making felt hats, blocks for making hatsHeading84.50Household or laundry-type washing machines; including machines which both wash and dryHeading84.51Machinery (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 articlesHeading84.52Sewing machines; other than book-sewing machines of heading no. 8440; furniture, bases and covers specially designed for sewing machines; sewing machine needlesHeading84.53Machinery 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 machinesHeading84.54Converters, ladles, ingot moulds and casting machines; of a kind used metallurgy or in metal foundriesHeading84.55Metal-rolling mills and rolls thereforHeading84.56Machine-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 machinesHeading84.57Machining centres, unit construction machines (single station) and multi-station transfer machines for working metalHeading84.58Lathes for removing metalHeading84.59Machine-tools; (including way-type unit head machines) for drilling, boring, milling, threading or tapping by removing metal, other than lathes of heading no. 8458Heading84.60Machine-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 productsHeading84.61Machine-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.Heading84.62Machine-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,Heading84.63Machine-tools; n.e.c. for working metal, sintered metal carbides or cermets without removing materialHeading84.64Machine-tools; for working stone, ceramics, concrete, asbestos-cement or like mineral materials or for cold working glassHeading84.65Machine-tools; (including machines for nailing, stapling, glueing or otherwise assembling) for working wood, cork, bone, hard plastics or rubber or similar hard materialsHeading84.66Parts & 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 handHeading84.67Tools; for working in the hand, pneumatic, hydraulic or with self-contained electric or non-electric motorHeading84.68Machinery 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 appliancesHeading84.70Calculating 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 registersHeading84.71Automatic 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 includedHeading84.72Office machines; not elsewhere classifiedHeading84.73Machinery; parts and accessories (other than covers, carrying cases and the like) suitable for use solely or principally with machines of headings 84.70 to 84.72Heading84.74Machinery for sorting, screening, separating, washing, crushing, grinding, mixing or kneading earth, stone, ores in solid form, shaping, moulding machinery for solid mineral fuelsHeading84.75Machines; for assembling electric or electronic lamps, tubes, valves, flashbulbs, in glass envelopes, machines for manufacturing or hot working glass or glasswareHeading84.76Automatic goods-vending machines (e.g. postage stamp, cigarette, food or beverage machines), including money-changing machinesHeading84.77Machinery; for working rubber or plastics or for the manufacture of products from these materials, n.e.c. in this chapterHeading84.78Machinery; for preparing or making up tobacco, n.e.c. in this chapterHeading84.79Machinery and mechanical appliances; having individual functions, n.e.c. in this chapterHeading84.80Moulding boxes for metal foundry, moulding patterns, moulds for metals (excluding ingot moulds), metal carbides, glass, mineral materials, rubber or plasticsHeading84.81Taps, cocks, valves and similar appliances for pipes, boiler shells, tanks, vats or the like, including pressure-reducing valves and thermostatically controlled valvesHeading84.82Ball or roller bearingsHeading84.83Transmission 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 couplingsHeading84.84Gaskets 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 sealsHeading84.85Machines for additive manufacturingHeading84.86Machines 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 ChapterHeading84.87Machinery parts; not containing electrical connectors, insulators, coils, contacts or other electrical features, n.e.c. in this chapterHeading

Related HS Codes

84.01Nuclear reactors; fuel elements (cartridges), non-irradiated8401.10Nuclear reactors8401.20Machinery and apparatus; for isotopic separation, and parts 8401.30Fuel elements (cartridges); non-irradiated8401.40Nuclear reactors; parts thereof84.02Boilers; steam or other vapour generating (other than centra8402.11Boilers; watertube boilers with a steam production exceeding8402.12Boilers; watertube boilers with a steam production not excee

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Frequently Asked Questions

What is HS Code 84?
HS Code 84 classifies "Machinery and mechanical appliances, boilers, nuclear reactors, parts thereof" under Section XVI (Machinery and Mechanical Appliances; Electrical Equipment). This chapter-level code is used internationally for customs classification, tariff determination, and trade statistics.
What products fall under HS 84?
HS Code 84 covers: Machinery and mechanical appliances, boilers, nuclear reactors, parts thereof. This is a broad category that includes more specific subcategories. Browse the child codes below for detailed product classifications.
How do I use HS Code 84 for customs?
When classifying goods under HS 84, ensure the product matches the specific description. As a chapter-level code, this is a broad category. You'll need to narrow down to a 4-digit heading or 6-digit subheading for customs declaration.
What are the trade regulations for Machinery and Mechanical Appliances; Electrical Equipment?
Electronics and machinery represent the largest share of global trade. Export controls may apply to dual-use technology.
Is HS 84 the same in every country?
The first 6 digits of HS codes are standardized worldwide by the World Customs Organization (WCO). However, most countries add additional digits (8-10 total) for their national tariff schedules. Always verify the full code with your destination country's customs authority.
What is the US import duty for HS 84?
The average US import duty for products under HS 84 is approximately 2% (range: 0-6%). ITA: 0% for many electronics. Most FTAs: 0% Note: actual rates depend on the specific product classification and country of origin. Verify with USITC for official rates.
Can I get a lower tariff rate under a Free Trade Agreement?
ITA: 0% for many electronics. Most FTAs: 0%. The US has FTAs with 20 countries including Canada, Mexico (USMCA), South Korea (KORUS), Australia, and others. To qualify for preferential rates, goods must meet rules of origin requirements and have proper documentation (e.g., Certificate of Origin).

Data verified March 2026 · Source: UN Comtrade & USITC

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