{
  "summary": "HS chapter 84 covers nuclear reactors, boilers, machinery and mechanical appliances; parts thereof. It has 86 headings, 84.01 to 84.87, and 538 six-digit subheadings in HS2022. National tariff lines under chapter 84 are live on border.bot for the United States (1,706 lines, also used by 1 other country).",
  "updatedAt": "2026-10-11",
  "facts": [
    {
      "label": "Chapter",
      "value": "84",
      "source": "border.bot release GLOBAL:hs #2"
    },
    {
      "label": "Description",
      "value": "Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof",
      "source": "border.bot release GLOBAL:hs #2"
    },
    {
      "label": "Headings",
      "value": "86",
      "source": "border.bot release GLOBAL:hs #2"
    },
    {
      "label": "Subheadings",
      "value": "538",
      "source": "border.bot release GLOBAL:hs #2"
    },
    {
      "label": "Edition",
      "value": "HS2022",
      "source": "border.bot release GLOBAL:hs #2"
    }
  ],
  "faq": [
    {
      "question": "What does HS chapter 84 cover?",
      "answer": "HS chapter 84 covers nuclear reactors, boilers, machinery and mechanical appliances; parts thereof."
    },
    {
      "question": "How many headings and subheadings are in HS chapter 84?",
      "answer": "HS chapter 84 has 86 headings and 538 six-digit subheadings in HS2022."
    },
    {
      "question": "Which countries’ tariffs list national lines in HS chapter 84?",
      "answer": "National tariff lines under chapter 84 are live on border.bot for the United States (1,706 lines, also used by 1 other country)."
    }
  ],
  "sections": [
    {
      "id": "covers",
      "title": "What this chapter covers",
      "text": [
        "HS chapter 84 covers nuclear reactors, boilers, machinery and mechanical appliances; parts thereof.",
        "It has 86 headings, 84.01 to 84.87, and 538 six-digit subheadings in HS2022."
      ]
    },
    {
      "id": "not-covered",
      "title": "What it doesn’t cover",
      "text": [
        "Chapter 83, before it, covers miscellaneous articles of base metal; chapter 85, after it, covers electrical machinery and equipment and parts thereof; sound recorders and reproducers, television image and sound recorders and reproducers, and parts and accessories of such articles."
      ]
    },
    {
      "id": "structure",
      "title": "How it is structured",
      "text": [
        "Chapter 84 is the first level of the Harmonized System. Its headings add two digits to the chapter number (84.01), and each heading's subheadings add two more."
      ]
    },
    {
      "id": "other-countries",
      "title": "In other countries",
      "text": [
        "National tariff lines under chapter 84 are live on border.bot for the United States (1,706 lines, also used by 1 other country)."
      ]
    },
    {
      "id": "sources",
      "title": "Sources and updates",
      "text": [
        "The Harmonized System legal text comes from border.bot release 2 (edition HS 2022), imported from a file, and has been live since 11 October 2026.",
        "This page was last updated on 11 October 2026.",
        "Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling."
      ]
    }
  ],
  "data": {
    "type": "hs-chapter",
    "edition": "HS2022",
    "chapter": {
      "code": "84",
      "description": "Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof"
    },
    "headings": [
      {
        "code": "8448",
        "description": "Auxiliary machinery for use with machines of heading 8444, 8445, 8446 or 8447 (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 8444, 8445, 8446 or 8447 (for example, spindles and spindle flyers, card clothing, combs, extruding nipples, shuttles, healds and heald-frames, hosiery needles)",
        "subheadings": [
          {
            "code": "844851",
            "description": "Parts and accessories of machines of heading 8447 or of their auxiliary machinery: Sinkers, needles and other articles used in forming stitches"
          },
          {
            "code": "844859",
            "description": "Parts and accessories of machines of heading 8447 or of their auxiliary machinery: Other"
          }
        ]
      },
      {
        "code": "8449",
        "description": "Machinery for the manufacture or finishing of felt or nonwovens in the piece or in shapes, including machinery for making felt hats; blocks for making hats",
        "subheadings": [
          {
            "code": "844900",
            "description": "Machinery for the manufacture or finishing of felt or nonwovens in the piece or in shapes, including machinery for making felt hats; blocks for making hats"
          }
        ]
      },
      {
        "code": "8450",
        "description": "Household or laundry-type washing machines, including machines which both wash and dry",
        "subheadings": [
          {
            "code": "845011",
            "description": "Machines, each of a dry linen capacity not exceeding 10 kg: Fully-automatic machines"
          },
          {
            "code": "845012",
            "description": "Machines, each of a dry linen capacity not exceeding 10 kg: Other machines, with built-in centrifugal drier"
          },
          {
            "code": "845019",
            "description": "Machines, each of a dry linen capacity not exceeding 10 kg: Other"
          },
          {
            "code": "845020",
            "description": "Machines, each of a dry linen capacity exceeding 10kg"
          },
          {
            "code": "845090",
            "description": "Parts"
          }
        ]
      },
      {
        "code": "8451",
        "description": "Machinery (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",
        "subheadings": [
          {
            "code": "845110",
            "description": "Dry-cleaning machines"
          },
          {
            "code": "845121",
            "description": "Drying machines: Each of a dry linen capacity not exceeding 10kg"
          },
          {
            "code": "845129",
            "description": "Drying machines: Other"
          },
          {
            "code": "845130",
            "description": "Ironing machines and presses (including fusing presses)"
          },
          {
            "code": "845140",
            "description": "Washing, bleaching or dyeing machines"
          },
          {
            "code": "845150",
            "description": "Machines for reeling, unreeling, folding, cutting or pinking textile fabrics"
          },
          {
            "code": "845180",
            "description": "Other machinery"
          },
          {
            "code": "845190",
            "description": "Parts"
          }
        ]
      },
      {
        "code": "8452",
        "description": "Sewing machines, other than book-sewing machines of heading 84.40; furniture, bases and covers specially designed for sewing machines; sewing machine needles",
        "subheadings": [
          {
            "code": "845210",
            "description": "Sewing machines of the household type"
          },
          {
            "code": "845221",
            "description": "Other sewing machines: Automatic units"
          },
          {
            "code": "845229",
            "description": "Other sewing machines: Other"
          },
          {
            "code": "845230",
            "description": "Sewing machine needles"
          },
          {
            "code": "845290",
            "description": "Furniture, bases and covers for sewing machines and parts thereof; other parts of sewing machines"
          }
        ]
      },
      {
        "code": "8453",
        "description": "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",
        "subheadings": [
          {
            "code": "845310",
            "description": "Machinery for preparing, tanning or working hides, skins or leather"
          },
          {
            "code": "845320",
            "description": "Machinery for making or repairing footwear"
          },
          {
            "code": "845380",
            "description": "Other machinery"
          },
          {
            "code": "845390",
            "description": "Parts"
          }
        ]
      },
      {
        "code": "8454",
        "description": "Converters, ladles, ingot moulds and casting machines, of a kind used in metallurgy or in metal foundries",
        "subheadings": [
          {
            "code": "845410",
            "description": "Converters"
          },
          {
            "code": "845420",
            "description": "Ingot moulds and ladles"
          },
          {
            "code": "845430",
            "description": "Casting machines"
          },
          {
            "code": "845490",
            "description": "Parts"
          }
        ]
      },
      {
        "code": "8455",
        "description": "Metal-rolling mills and rolls therefor",
        "subheadings": [
          {
            "code": "845510",
            "description": "Tube mills"
          },
          {
            "code": "845521",
            "description": "Other rolling mills: Hot or combination hot and cold"
          },
          {
            "code": "845522",
            "description": "Other rolling mills: Cold"
          },
          {
            "code": "845530",
            "description": "Rolls for rolling mills"
          },
          {
            "code": "845590",
            "description": "Other parts"
          }
        ]
      },
      {
        "code": "8456",
        "description": "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",
        "subheadings": [
          {
            "code": "845611",
            "description": "Operated by laser or other light or photon beam processes: Operated by laser"
          },
          {
            "code": "845612",
            "description": "Operated by laser or other light or photon beam processes: Operated by other light or photon beam processes"
          },
          {
            "code": "845620",
            "description": "Operated by ultrasonic processes"
          },
          {
            "code": "845630",
            "description": "Operated by electro-discharge processes"
          },
          {
            "code": "845640",
            "description": "Operated by plasma arc processes"
          },
          {
            "code": "845650",
            "description": "Water-jet cutting machines"
          },
          {
            "code": "845690",
            "description": "Other"
          }
        ]
      },
      {
        "code": "8457",
        "description": "Machining centres, unit construction machines (single station) and multi-station transfer machines, for working metal",
        "subheadings": [
          {
            "code": "845710",
            "description": "Machining centres"
          },
          {
            "code": "845720",
            "description": "Unit construction machines (single station)"
          },
          {
            "code": "845730",
            "description": "Multi-station transfer machines"
          }
        ]
      },
      {
        "code": "8458",
        "description": "Lathes (including turning centres) for removing metal",
        "subheadings": [
          {
            "code": "845811",
            "description": "Horizontal lathes: Numerically controlled"
          },
          {
            "code": "845819",
            "description": "Horizontal lathes: Other"
          },
          {
            "code": "845891",
            "description": "Other lathes: Numerically controlled"
          },
          {
            "code": "845899",
            "description": "Other lathes: Other"
          }
        ]
      },
      {
        "code": "8459",
        "description": "Machine-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",
        "subheadings": [
          {
            "code": "845910",
            "description": "Way-type unit head machines"
          },
          {
            "code": "845921",
            "description": "Other drilling machines: Numerically controlled"
          },
          {
            "code": "845929",
            "description": "Other drilling machines: Other"
          },
          {
            "code": "845931",
            "description": "Other boring-milling machines: Numerically controlled"
          },
          {
            "code": "845939",
            "description": "Other boring-milling machines: Other"
          },
          {
            "code": "845941",
            "description": "Other boring machines: Numerically controlled"
          },
          {
            "code": "845949",
            "description": "Other boring machines: Other"
          },
          {
            "code": "845951",
            "description": "Milling machines, knee-type: Numerically controlled"
          },
          {
            "code": "845959",
            "description": "Milling machines, knee-type: Other"
          },
          {
            "code": "845961",
            "description": "Other milling machines: Numerically controlled"
          },
          {
            "code": "845969",
            "description": "Other milling machines: Other"
          },
          {
            "code": "845970",
            "description": "Other threading or tapping machines"
          }
        ]
      },
      {
        "code": "8460",
        "description": "Machine-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",
        "subheadings": [
          {
            "code": "846012",
            "description": "Flat-surface grinding machines: Numerically controlled"
          },
          {
            "code": "846019",
            "description": "Flat-surface grinding machines: Other"
          },
          {
            "code": "846022",
            "description": "Other grinding machines: Centreless grinding machines, numerically controlled"
          },
          {
            "code": "846023",
            "description": "Other grinding machines: Other cylindrical grinding machines, numerically controlled"
          },
          {
            "code": "846024",
            "description": "Other grinding machines: Other, numerically controlled"
          },
          {
            "code": "846029",
            "description": "Other grinding machines: Other"
          },
          {
            "code": "846031",
            "description": "Sharpening (tool or cutter grinding) machines: Numerically controlled"
          },
          {
            "code": "846039",
            "description": "Sharpening (tool or cutter grinding) machines: Other"
          },
          {
            "code": "846040",
            "description": "Honing or lapping machines"
          },
          {
            "code": "846090",
            "description": "Other"
          }
        ]
      },
      {
        "code": "8461",
        "description": "Machine-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",
        "subheadings": [
          {
            "code": "846120",
            "description": "Shaping or slotting machines"
          },
          {
            "code": "846130",
            "description": "Broaching machines"
          },
          {
            "code": "846140",
            "description": "Gear cutting, gear grinding or gear finishing machines"
          },
          {
            "code": "846150",
            "description": "Sawing or cutting-off machines"
          },
          {
            "code": "846190",
            "description": "Other"
          }
        ]
      },
      {
        "code": "8462",
        "description": "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, shearing, punching, notching or nibbling (excluding draw-benches); presses for working metal or metal carbides, not specified above",
        "subheadings": [
          {
            "code": "846211",
            "description": "Hot forming machines for forging, die forging (including presses) and hot hammers: Closed die forging machines"
          },
          {
            "code": "846219",
            "description": "Hot forming machines for forging, die forging (including presses) and hot hammers: Other"
          },
          {
            "code": "846222",
            "description": "Bending, folding, straightening or flattening machines (including press brakes) for flat products: Profile forming machines"
          },
          {
            "code": "846223",
            "description": "Bending, folding, straightening or flattening machines (including press brakes) for flat products: Numerically controlled press brakes"
          },
          {
            "code": "846224",
            "description": "Bending, folding, straightening or flattening machines (including press brakes) for flat products: Numerically controlled panel benders"
          },
          {
            "code": "846225",
            "description": "Bending, folding, straightening or flattening machines (including press brakes) for flat products: Numerically controlled roll forming machines"
          },
          {
            "code": "846226",
            "description": "Bending, folding, straightening or flattening machines (including press brakes) for flat products: Other numerically controlled bending, folding, straightening or flattening machines"
          },
          {
            "code": "846229",
            "description": "Bending, folding, straightening or flattening machines (including press brakes) for flat products: Other"
          },
          {
            "code": "846232",
            "description": "Slitting lines, cut-to-length lines and other shearing machines (excluding presses) for flat products, other than combined punching and shearing machines: Slitting lines and cut-to-length lines"
          },
          {
            "code": "846233",
            "description": "Slitting lines, cut-to-length lines and other shearing machines (excluding presses) for flat products, other than combined punching and shearing machines: Numerically controlled shearing machines"
          },
          {
            "code": "846239",
            "description": "Slitting lines, cut-to-length lines and other shearing machines (excluding presses) for flat products, other than combined punching and shearing machines: Other"
          },
          {
            "code": "846242",
            "description": "Punching, notching or nibbling machines (excluding presses) for flat products including combined punching and shearing machines: Numerically controlled"
          },
          {
            "code": "846249",
            "description": "Punching, notching or nibbling machines (excluding presses) for flat products including combined punching and shearing machines: Other"
          },
          {
            "code": "846251",
            "description": "Machines for working tube, pipe, hollow section and bar (excluding presses): Numerically controlled"
          },
          {
            "code": "846259",
            "description": "Machines for working tube, pipe, hollow section and bar (excluding presses): Other"
          },
          {
            "code": "846261",
            "description": "Cold metal working presses: Hydraulic presses"
          },
          {
            "code": "846262",
            "description": "Cold metal working presses: Mechanical presses"
          },
          {
            "code": "846263",
            "description": "Cold metal working presses: Servo-presses"
          },
          {
            "code": "846269",
            "description": "Cold metal working presses: Other"
          },
          {
            "code": "846290",
            "description": "Other"
          }
        ]
      },
      {
        "code": "8463",
        "description": "Other machine-tools for working metal or cermets, without removing material",
        "subheadings": [
          {
            "code": "846310",
            "description": "Draw-benches for bars, tubes, profiles, wire or the like"
          },
          {
            "code": "846320",
            "description": "Thread rolling machines"
          },
          {
            "code": "846330",
            "description": "Machines for working wire"
          },
          {
            "code": "846390",
            "description": "Other"
          }
        ]
      },
      {
        "code": "8464",
        "description": "Machine-tools for working stone, ceramics, concrete, asbestos- cement or like mineral materials or for cold working glass",
        "subheadings": [
          {
            "code": "846410",
            "description": "Sawing machines"
          }
        ]
      }
    ],
    "previous": {
      "code": "83",
      "description": "Miscellaneous articles of base metal",
      "indexable": true
    },
    "next": {
      "code": "85",
      "description": "Electrical machinery and equipment and parts thereof; sound recorders and reproducers, television image and sound recorders and reproducers, and parts and accessories of such articles",
      "indexable": true
    },
    "schedules": [
      {
        "code": "US",
        "name": "United States",
        "slug": "united-states",
        "lines": 1706,
        "members": 1
      }
    ],
    "provenance": [
      {
        "dataset": "GLOBAL:hs",
        "country": "GLOBAL",
        "kind": "hs",
        "seq": 2,
        "version": "mytraddal hs2022.csv (HS 2022)",
        "liveAt": "2026-10-11T06:04:17.693Z",
        "origin": "upload",
        "sourceUrls": []
      }
    ],
    "dateModified": "2026-10-11T06:04:17.693Z",
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  "code": "84",
  "attribution": "border.bot tariff reference (border.bot), compiled from the official publishers named on each page.",
  "terms": "https://border.bot/legal/terms",
  "notice": "Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.",
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