{
  "summary": "In the United States tariff, line 8483.40.50.20 covers gears and gearing, other than toothed wheels, chain sprockets and other transmission elements entered separately; ball or roller screws; gear boxes and other speed changers, including torque converters, gear boxes and other speed changers, fixed ratio speed changers, multiple and variable ratio speed changers each ratio of which is selected by manual manipulation, gear boxes and speed changers for wind turbines, as described in statistical note 9 to this chapter. The general (MFN) duty rate is 2.5%. It falls under HS subheading 8483.40 in heading 84.83 (chapter 84).",
  "updatedAt": "2026-10-09",
  "facts": [
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      "label": "Tariff line",
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    },
    {
      "label": "Covers",
      "value": "Gears and gearing, other than toothed wheels, chain sprockets and other transmission elements entered separately; ball or roller screws; gear boxes and other speed changers, including torque converters, gear boxes and other speed changers, fixed ratio speed changers, multiple and variable ratio speed changers each ratio of which is selected by manual manipulation, gear boxes and speed changers for wind turbines, as described in statistical note 9 to this chapter",
      "source": "https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false"
    },
    {
      "label": "Duty (MFN)",
      "value": "2.5%",
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    },
    {
      "label": "Preferential rates",
      "value": "From free (17 programmes or origins)",
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    },
    {
      "label": "Additional duties",
      "value": "None recorded",
      "source": null
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    {
      "label": "Restrictions",
      "value": "None recorded",
      "source": null
    },
    {
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      "label": "HS subheading",
      "value": "8483.40",
      "source": null,
      "url": "https://border.bot/hs-codes/848340"
    }
  ],
  "faq": [
    {
      "question": "What does tariff line 8483.40.50.20 cover in the United States tariff?",
      "answer": "In the United States tariff, line 8483.40.50.20 covers gears and gearing, other than toothed wheels, chain sprockets and other transmission elements entered separately; ball or roller screws; gear boxes and other speed changers, including torque converters, gear boxes and other speed changers, fixed ratio speed changers, multiple and variable ratio speed changers each ratio of which is selected by manual manipulation, gear boxes and speed changers for wind turbines, as described in statistical note 9 to this chapter."
    },
    {
      "question": "What is the general (MFN) duty on 8483.40.50.20 in the United States?",
      "answer": "The general (MFN) duty rate is 2.5%. The rate is published on 8483.40.50."
    },
    {
      "question": "Which preferential rates apply to 8483.40.50.20?",
      "answer": "Duty-free entry applies to goods that qualify under 16 programmes: the United States-Australia Free Trade Agreement, the United States-Bahrain Free Trade Agreement Implementation Act, the United States-Chile Free Trade Agreement, the United States-Colombia Trade Promotion Agreement Implementation Act, African Growth and Opportunity Act, Caribbean Basin Economic Recovery Act, the United States-Israel Free Trade Area, the United States-Jordan Free Trade Area Implementation Act, the United States-Korea Free Trade Agreement Implementation Act, the United States-Morocco Free Trade Agreement Implementation Act, the United States-Oman Free Trade Agreement Implementation Act, the Dominican Republic-Central America-United States Free Trade Agreement, the United States-Panama Trade Promotion Agreement Implementation Act, the United States-Peru Trade Promotion Agreement Implementation Act, the United States-Mexico-Canada Agreement and the United States-Singapore Free Trade Agreement, and to goods from a group of origins (origin group A*)."
    }
  ],
  "sections": [
    {
      "id": "covers",
      "title": "What this line covers",
      "text": [
        "In the United States tariff, line 8483.40.50.20 covers gears and gearing, other than toothed wheels, chain sprockets and other transmission elements entered separately; ball or roller screws; gear boxes and other speed changers, including torque converters, gear boxes and other speed changers, fixed ratio speed changers, multiple and variable ratio speed changers each ratio of which is selected by manual manipulation, gear boxes and speed changers for wind turbines, as described in statistical note 9 to this chapter.",
        "Its legal text is “Gear boxes and speed changers for wind turbines, as described in statistical note 9 to this chapter”, read under “Gears and gearing, other than toothed wheels, chain sprockets and other transmission elements entered separately; ball or roller screws; gear boxes and other speed changers, including torque converters”, “Gear boxes and other speed changers”, “Fixed ratio speed changers, multiple and variable ratio speed changers each ratio of which is selected by manual manipulation” and “Other”.",
        "Products commonly classified here include Used fixed ratio speed changers (border.bot’s search keywords, not legal text)."
      ]
    },
    {
      "id": "structure",
      "title": "How it is structured",
      "text": [
        "It falls under HS subheading 8483.40 in heading 84.83 (chapter 84). The first six digits are the Harmonized System code; the 4 digits after them are added by the United States tariff."
      ]
    },
    {
      "id": "duty",
      "title": "Duty",
      "text": [
        "The general (MFN) duty rate is 2.5%.",
        "The rate is published on 8483.40.50.",
        "Duty-free entry applies to goods that qualify under 16 programmes, and to goods from a group of origins (origin group A*)."
      ]
    },
    {
      "id": "other-countries",
      "title": "In other countries",
      "text": [
        "No other national tariff on border.bot has live lines under 8483.40 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."
      ]
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      "description": "Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof"
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      "code": "8483",
      "description": "Transmission shafts (including camshafts and crankshafts) and cranks; bearing housings, housed bearings 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); parts thereof"
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      "description": "Gears and gearing, other than toothed wheels, chain sprockets and other transmission elements presented separately; ball or roller screws; gear boxes and other speed changers, including torque converters"
    },
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      "description": "Gear boxes and speed changers for wind turbines, as described in statistical note 9 to this chapter",
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        "Gear boxes and other speed changers",
        "Fixed ratio speed changers, multiple and variable ratio speed changers each ratio of which is selected by manual manipulation",
        "Other",
        "Gear boxes and speed changers for wind turbines, as described in statistical note 9 to this chapter"
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      "general": {
        "code": "84834050",
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            {
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            {
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            {
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            {
              "code": "PE",
              "label": "United States-Peru Trade Promotion Agreement Implementation Act"
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              "label": "United States-Mexico-Canada Agreement"
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            {
              "code": "SG",
              "label": "United States-Singapore Free Trade Agreement"
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      "restrictions": []
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        "code": "8483401000",
        "description": "Torque converters"
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