{
  "summary": "The United States tariff has 1,706 national lines in HS chapter 84 (nuclear reactors, boilers, machinery and mechanical appliances; parts thereof), under 538 subheadings in 86 headings.",
  "updatedAt": "2026-10-09",
  "facts": [
    {
      "label": "National lines",
      "value": "1,706",
      "source": null
    },
    {
      "label": "Subheadings",
      "value": "538",
      "source": null
    },
    {
      "label": "Tariff",
      "value": "United States",
      "source": "https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false",
      "url": "https://border.bot/countries/united-states"
    },
    {
      "label": "Chapter",
      "value": "84: Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof",
      "source": null
    }
  ],
  "faq": [
    {
      "question": "How many national tariff lines does the United States tariff have in HS chapter 84?",
      "answer": "The United States tariff has 1,706 national lines in HS chapter 84 (nuclear reactors, boilers, machinery and mechanical appliances; parts thereof), under 538 subheadings in 86 headings."
    }
  ],
  "sections": [
    {
      "id": "covers",
      "title": "Subheadings with United States lines",
      "text": [
        "The United States tariff has 1,706 national lines in HS chapter 84 (nuclear reactors, boilers, machinery and mechanical appliances; parts thereof), under 538 subheadings in 86 headings."
      ]
    },
    {
      "id": "other-countries",
      "title": "In other countries",
      "text": [
        "No other national tariff on border.bot has live lines under chapter 84 yet."
      ]
    },
    {
      "id": "sources",
      "title": "Sources and updates",
      "text": [
        "The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.",
        "The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.",
        "The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.",
        "This page was last updated on 9 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": "country-chapter",
    "country": {
      "code": "US",
      "name": "United States",
      "slug": "united-states"
    },
    "schedule": {
      "code": "US",
      "name": "United States",
      "slug": "united-states"
    },
    "borrowed": false,
    "localTaxes": [],
    "localDeminimis": [],
    "ratesLive": true,
    "provenance": [
      {
        "dataset": "US:hs",
        "country": "US",
        "kind": "hs",
        "seq": 1,
        "version": "2026HTSRev21",
        "liveAt": "2026-10-09T21:15:50.043Z",
        "origin": "source",
        "sourceUrls": [
          "https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false"
        ]
      },
      {
        "dataset": "US:rates",
        "country": "US",
        "kind": "rates",
        "seq": 1,
        "version": "2026HTSRev21",
        "liveAt": "2026-10-09T21:15:36.287Z",
        "origin": "source",
        "sourceUrls": [
          "https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false"
        ]
      },
      {
        "dataset": "US:programmes",
        "country": "US",
        "kind": "programmes",
        "seq": 1,
        "version": "2026HTSRev21",
        "liveAt": "2026-10-09T21:15:58.040Z",
        "origin": "source",
        "sourceUrls": [
          "https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false"
        ]
      }
    ],
    "dateModified": "2026-10-09T21:15:58.040Z",
    "chapter": {
      "code": "84",
      "description": "Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof"
    },
    "headings": [
      {
        "code": "8401",
        "description": "Nuclear reactors; fuel elements (cartridges), non-irradiated, for nuclear reactors; machinery and apparatus for isotopic separation; parts thereof",
        "subheadings": [
          {
            "code": "840110",
            "description": "Nuclear reactors",
            "lines": 1
          },
          {
            "code": "840120",
            "description": "Machinery and apparatus for isotopic separation, and parts thereof",
            "lines": 1
          },
          {
            "code": "840130",
            "description": "Fuel elements (cartridges), non-irradiated",
            "lines": 1
          },
          {
            "code": "840140",
            "description": "Parts of nuclear reactors",
            "lines": 1
          }
        ]
      },
      {
        "code": "8402",
        "description": "Steam or other vapor generating boilers (other than central heating hot water boilers capable also of producing low pressure steam); super-heated water boilers; parts thereof",
        "subheadings": [
          {
            "code": "840211",
            "description": "Steam or other vapour generating boilers: Watertube boilers with a steam production exceeding 45t per hour",
            "lines": 1
          },
          {
            "code": "840212",
            "description": "Steam or other vapour generating boilers: Watertube boilers with a steam production not exceeding 45t per hour",
            "lines": 1
          },
          {
            "code": "840219",
            "description": "Steam or other vapour generating boilers: Other vapour generating boilers, including hybrid boilers",
            "lines": 1
          },
          {
            "code": "840220",
            "description": "Super-heated water boilers",
            "lines": 1
          },
          {
            "code": "840290",
            "description": "Parts",
            "lines": 2
          }
        ]
      },
      {
        "code": "8403",
        "description": "Central heating boilers (other than those of heading 8402) and parts thereof",
        "subheadings": [
          {
            "code": "840310",
            "description": "Boilers",
            "lines": 1
          },
          {
            "code": "840390",
            "description": "Parts",
            "lines": 1
          }
        ]
      },
      {
        "code": "8404",
        "description": "Auxiliary plant for use with boilers of heading 8402 or 8403 (for example, economizers, super-heaters, soot removers, gas recoverers); condensers for steam or other vapor power units; parts thereof",
        "subheadings": [
          {
            "code": "840410",
            "description": "Auxiliary plant for use with boilers of heading 84.02 or 84.03",
            "lines": 2
          },
          {
            "code": "840420",
            "description": "Condensers for steam or other vapour power units",
            "lines": 1
          },
          {
            "code": "840490",
            "description": "Parts",
            "lines": 1
          }
        ]
      },
      {
        "code": "8405",
        "description": "Producer gas or water gas generators, with or without their purifiers; acetylene gas generators and similar water process gas generators, with or without their purifiers; parts thereof",
        "subheadings": [
          {
            "code": "840510",
            "description": "Producer gas or water gas generators, with or without their purifiers; acetylene gas generators and similar water process gas generators, with or without their purifiers",
            "lines": 1
          },
          {
            "code": "840590",
            "description": "Parts",
            "lines": 1
          }
        ]
      },
      {
        "code": "8406",
        "description": "Steam turbines and other vapor turbines, and parts thereof",
        "subheadings": [
          {
            "code": "840610",
            "description": "Turbines for marine propulsion",
            "lines": 2
          },
          {
            "code": "840681",
            "description": "Other turbines: Of an output exceeding 40 MW",
            "lines": 3
          },
          {
            "code": "840682",
            "description": "Other turbines: Of an output not exceeding 40 MW",
            "lines": 5
          },
          {
            "code": "840690",
            "description": "Parts",
            "lines": 9
          }
        ]
      },
      {
        "code": "8407",
        "description": "Spark-ignition reciprocating or rotary internal combustion piston engines",
        "subheadings": [
          {
            "code": "840710",
            "description": "Aircraft engines",
            "lines": 4
          },
          {
            "code": "840721",
            "description": "Marine propulsion engines: Outboard motors",
            "lines": 2
          },
          {
            "code": "840729",
            "description": "Marine propulsion engines: Other",
            "lines": 4
          },
          {
            "code": "840731",
            "description": "Reciprocating piston engines of a kind used for the propulsion of vehicles of Chapter 87: Of a cylinder capacity not exceeding 50 cc",
            "lines": 2
          },
          {
            "code": "840732",
            "description": "Reciprocating piston engines of a kind used for the propulsion of vehicles of Chapter 87: Of a cylinder capacity exceeding 50 cc but not exceeding 250 cc",
            "lines": 5
          },
          {
            "code": "840733",
            "description": "Reciprocating piston engines of a kind used for the propulsion of vehicles of Chapter 87: Of a cylinder capacity exceeding 250 cm3 but not exceeding 1 000 cm3",
            "lines": 9
          },
          {
            "code": "840734",
            "description": "Reciprocating piston engines of a kind used for the propulsion of vehicles of Chapter 87: Of a cylinder capacity exceeding 1,000 cc",
            "lines": 12
          },
          {
            "code": "840790",
            "description": "Other engines",
            "lines": 9
          }
        ]
      },
      {
        "code": "8408",
        "description": "Compression-ignition internal combustion piston engines (diesel or semi-diesel engines)",
        "subheadings": [
          {
            "code": "840810",
            "description": "Marine propulsion engines",
            "lines": 6
          },
          {
            "code": "840820",
            "description": "Engines of a kind used for the propulsion of vehicles of Chapter 87",
            "lines": 4
          },
          {
            "code": "840890",
            "description": "Other engines",
            "lines": 7
          }
        ]
      },
      {
        "code": "8409",
        "description": "Parts suitable for use solely or principally with the engines of heading 8407 or 8408",
        "subheadings": [
          {
            "code": "840910",
            "description": "For aircraft engines",
            "lines": 2
          },
          {
            "code": "840991",
            "description": "Other: Suitable for use solely or principally with spark-ignition internal combustion piston engines",
            "lines": 11
          },
          {
            "code": "840999",
            "description": "Other: Other",
            "lines": 9
          }
        ]
      },
      {
        "code": "8410",
        "description": "Hydraulic turbines, water wheels and regulators therefor; parts thereof",
        "subheadings": [
          {
            "code": "841011",
            "description": "Hydraulic turbines and water wheels: Of a power not exceeding 1,000 kW",
            "lines": 1
          },
          {
            "code": "841012",
            "description": "Hydraulic turbines and water wheels: Of a power exceeding 1,000 kW but not exceeding 10,000 kW",
            "lines": 1
          },
          {
            "code": "841013",
            "description": "Hydraulic turbines and water wheels: Of a power exceeding 10,000 kW",
            "lines": 1
          },
          {
            "code": "841090",
            "description": "Parts, including regulators",
            "lines": 1
          }
        ]
      },
      {
        "code": "8411",
        "description": "Turbojets, turbopropellers and other gas turbines, and parts thereof",
        "subheadings": [
          {
            "code": "841111",
            "description": "Turbojets: Of a thrust not exceeding 25 kN",
            "lines": 2
          },
          {
            "code": "841112",
            "description": "Turbojets: Of a thrust exceeding 25 kN",
            "lines": 2
          },
          {
            "code": "841121",
            "description": "Turbopropellers: Of a power not exceeding 1,100 kW",
            "lines": 2
          },
          {
            "code": "841122",
            "description": "Turbopropellers: Of a power exceeding 1,100 kW",
            "lines": 2
          },
          {
            "code": "841181",
            "description": "Other gas turbines: Of a power not exceeding 5,000 kW",
            "lines": 3
          },
          {
            "code": "841182",
            "description": "Other gas turbines: Of a power exceeding 5,000 kW",
            "lines": 3
          },
          {
            "code": "841191",
            "description": "Parts: Of turbo-jets or turbo-propellers",
            "lines": 6
          },
          {
            "code": "841199",
            "description": "Parts: Other",
            "lines": 7
          }
        ]
      },
      {
        "code": "8412",
        "description": "Other engines and motors, and parts thereof",
        "subheadings": [
          {
            "code": "841210",
            "description": "Reaction engines other than turbo-jets",
            "lines": 2
          },
          {
            "code": "841221",
            "description": "Hydraulic power engines and motors: Linear acting (cylinders)",
            "lines": 5
          },
          {
            "code": "841229",
            "description": "Hydraulic power engines and motors: Other",
            "lines": 6
          },
          {
            "code": "841231",
            "description": "Pneumatic power engines and motors: Linear acting (cylinders)",
            "lines": 2
          },
          {
            "code": "841239",
            "description": "Pneumatic power engines and motors: Other",
            "lines": 2
          },
          {
            "code": "841280",
            "description": "Other",
            "lines": 2
          },
          {
            "code": "841290",
            "description": "Parts",
            "lines": 9
          }
        ]
      },
      {
        "code": "8413",
        "description": "Pumps for liquids, whether or not fitted with a measuring device; liquid elevators; part thereof",
        "subheadings": [
          {
            "code": "841311",
            "description": "Pumps fitted or designed to be fitted with a measuring device: Pumps for dispensing fuel or lubricants, of the type used in filling-stations or in garages",
            "lines": 1
          },
          {
            "code": "841319",
            "description": "Pumps fitted or designed to be fitted with a measuring device: Other",
            "lines": 1
          },
          {
            "code": "841320",
            "description": "Hand pumps, other than those of subheading 8413.11 or 8413.19",
            "lines": 1
          },
          {
            "code": "841330",
            "description": "Fuel, lubricating or cooling medium pumps for internal combustion piston engines",
            "lines": 4
          },
          {
            "code": "841340",
            "description": "Concrete pumps",
            "lines": 1
          },
          {
            "code": "841350",
            "description": "Other reciprocating positive displacement pumps",
            "lines": 5
          },
          {
            "code": "841360",
            "description": "Other rotary positive displacement pumps",
            "lines": 6
          },
          {
            "code": "841370",
            "description": "Other centrifugal pumps",
            "lines": 9
          },
          {
            "code": "841381",
            "description": "Other pumps; liquid elevators: Pumps",
            "lines": 3
          },
          {
            "code": "841382",
            "description": "Other pumps; liquid elevators: Liquid elevators",
            "lines": 1
          },
          {
            "code": "841391",
            "description": "Parts: Of pumps",
            "lines": 12
          },
          {
            "code": "841392",
            "description": "Parts: Of liquid elevators",
            "lines": 1
          }
        ]
      },
      {
        "code": "8414",
        "description": "Air 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; parts thereof",
        "subheadings": [
          {
            "code": "841410",
            "description": "Vacuum pumps",
            "lines": 1
          },
          {
            "code": "841420",
            "description": "Hand- or foot-operated air pumps",
            "lines": 1
          },
          {
            "code": "841430",
            "description": "Compressors of a kind used in refrigerating equipment",
            "lines": 9
          },
          {
            "code": "841440",
            "description": "Air compressors mounted on a wheeled chassis for towing",
            "lines": 1
          },
          {
            "code": "841451",
            "description": "Fans: Table, floor, wall, window, ceiling or roof fans, with a self- contained electric motor of an output not exceeding 125 W",
            "lines": 3
          },
          {
            "code": "841459",
            "description": "Fans: Other",
            "lines": 7
          },
          {
            "code": "841460",
            "description": "Hoods having a maximum horizontal side not exceeding 120cm",
            "lines": 1
          },
          {
            "code": "841470",
            "description": "Gas-tight biological safety cabinets",
            "lines": 1
          },
          {
            "code": "841480",
            "description": "Other",
            "lines": 21
          },
          {
            "code": "841490",
            "description": "Parts",
            "lines": 12
          }
        ]
      },
      {
        "code": "8415",
        "description": "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; parts thereof",
        "subheadings": [
          {
            "code": "841510",
            "description": "Of a kind designed to be fixed to a window, wall, ceiling or floor, self-contained or “split-system”",
            "lines": 5
          },
          {
            "code": "841520",
            "description": "Of a kind used for persons, in motor vehicles",
            "lines": 1
          },
          {
            "code": "841581",
            "description": "Other: Incorporating a refrigerating unit and a valve for reversal of the cooling/heat cycle (reversible heat pumps)",
            "lines": 3
          },
          {
            "code": "841582",
            "description": "Other: Other, incorporating a refrigerating unit",
            "lines": 10
          },
          {
            "code": "841583",
            "description": "Other: Not incorporating a refrigerating unit",
            "lines": 4
          },
          {
            "code": "841590",
            "description": "Parts",
            "lines": 7
          }
        ]
      },
      {
        "code": "8416",
        "description": "Furnace burners for liquid fuel, for pulverized solid fuel or for gas; mechanical stokers, including their mechanical grates, mechanical ash dischargers and similar appliances; parts thereof",
        "subheadings": [
          {
            "code": "841610",
            "description": "Furnace burners for liquid fuel",
            "lines": 1
          },
          {
            "code": "841620",
            "description": "Other furnace burners, including combination burners",
            "lines": 2
          },
          {
            "code": "841630",
            "description": "Mechanical stokers, including their mechanical grates, mechanical ash dischargers and similar appliances",
            "lines": 1
          },
          {
            "code": "841690",
            "description": "Parts",
            "lines": 1
          }
        ]
      },
      {
        "code": "8417",
        "description": "Industrial or laboratory furnaces and ovens, including incinerators, nonelectric, and parts thereof",
        "subheadings": [
          {
            "code": "841710",
            "description": "Furnaces and ovens for the roasting, melting or other heat-treatment of ores, pyrites or of metals",
            "lines": 1
          },
          {
            "code": "841720",
            "description": "Bakery ovens, including biscuit ovens",
            "lines": 1
          },
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            "code": "841780",
            "description": "Other",
            "lines": 1
          },
          {
            "code": "841790",
            "description": "Parts",
            "lines": 1
          }
        ]
      },
      {
        "code": "8418",
        "description": "Refrigerators, freezers and other refrigerating or freezing equipment, electric or other; heat pumps, other than the air conditioning machines of heading 8415; parts thereof",
        "subheadings": [
          {
            "code": "841810",
            "description": "Combined refrigerator-freezers, fitted with separate external doors or drawers, or combinations thereof",
            "lines": 9
          },
          {
            "code": "841821",
            "description": "Refrigerators, household type: Compression-type",
            "lines": 4
          },
          {
            "code": "841829",
            "description": "Refrigerators, household type: Other",
            "lines": 2
          },
          {
            "code": "841830",
            "description": "Freezers of the chest type, not exceeding 800l capacity",
            "lines": 1
          },
          {
            "code": "841840",
            "description": "Freezers of the upright type, not exceeding 900l capacity",
            "lines": 1
          },
          {
            "code": "841850",
            "description": "Other furniture (chests, cabinets, display counters, show-cases and the like) for storage and display, incorporating refrigerating or freezing equipment",
            "lines": 2
          },
          {
            "code": "841861",
            "description": "Other refrigerating or freezing equipment; heat pumps: Heat pumps other than air conditioning machines of heading 84.15",
            "lines": 1
          },
          {
            "code": "841869",
            "description": "Other refrigerating or freezing equipment; heat pumps: Other",
            "lines": 7
          },
          {
            "code": "841891",
            "description": "Parts: Furniture designed to receive refrigerating or freezing equipment",
            "lines": 1
          },
          {
            "code": "841899",
            "description": "Parts: Other",
            "lines": 8
          }
        ]
      },
      {
        "code": "8419",
        "description": "Machinery, plant or laboratory equipment, whether or not electrically heated (excluding furnaces, ovens and other equipment of heading 8514), for the treatment of materials by a process involving a change of temperature such as heating, cooking, roasting, distilling, rectifying, sterilizing, pasteurizing, steaming, drying, evaporating, vaporizing, condensing or cooling, other than machinery or plant of a kind used for domestic purposes; instantaneous or storage water heaters, nonelectric; parts…",
        "subheadings": [
          {
            "code": "841911",
            "description": "Instantaneous or storage water heaters, non-electric: Instantaneous gas water heaters",
            "lines": 1
          }
        ]
      }
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      "description": "Wire, rods, tubes, plates, electrodes and similar products of base metal or of metal carbides, coated or cored with flux material, of a kind used for soldering, brazing, welding or deposition of metal or of metal carbides; wire and rods, of agglomerated base metal powder, used for metal spraying; base metal parts thereof",
      "indexable": true
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