{
  "summary": "In the United States tariff, line 8431.43.40.00 covers parts suitable for use solely or principally with the machinery of headings 8425 to 8430, of machinery of heading 8426, 8429 or 8430, parts for boring or sinking machinery of subheading 8430.41 or 8430.49, of offshore oil and natural gas drilling and production platforms. Goods under this line enter free of general (MFN) duty. It falls under HS subheading 8431.43 in heading 84.31 (chapter 84).",
  "updatedAt": "2026-10-09",
  "facts": [
    {
      "label": "Tariff line",
      "value": "8431.43.40.00",
      "source": "https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false"
    },
    {
      "label": "Covers",
      "value": "Parts suitable for use solely or principally with the machinery of headings 8425 to 8430, of machinery of heading 8426, 8429 or 8430, parts for boring or sinking machinery of subheading 8430.41 or 8430.49, of offshore oil and natural gas drilling and production platforms",
      "source": "https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false"
    },
    {
      "label": "Duty (MFN)",
      "value": "Free",
      "source": "https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false"
    },
    {
      "label": "Additional duties",
      "value": "None recorded",
      "source": null
    },
    {
      "label": "Restrictions",
      "value": "None recorded",
      "source": null
    },
    {
      "label": "Tariff",
      "value": "United States",
      "source": "https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false",
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      "label": "HS subheading",
      "value": "8431.43",
      "source": null,
      "url": "https://border.bot/hs-codes/843143"
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  "faq": [
    {
      "question": "What does tariff line 8431.43.40.00 cover in the United States tariff?",
      "answer": "In the United States tariff, line 8431.43.40.00 covers parts suitable for use solely or principally with the machinery of headings 8425 to 8430, of machinery of heading 8426, 8429 or 8430, parts for boring or sinking machinery of subheading 8430.41 or 8430.49, of offshore oil and natural gas drilling and production platforms."
    },
    {
      "question": "What is the general (MFN) duty on 8431.43.40.00 in the United States?",
      "answer": "Goods under this line enter free of general (MFN) duty."
    }
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  "sections": [
    {
      "id": "covers",
      "title": "What this line covers",
      "text": [
        "In the United States tariff, line 8431.43.40.00 covers parts suitable for use solely or principally with the machinery of headings 8425 to 8430, of machinery of heading 8426, 8429 or 8430, parts for boring or sinking machinery of subheading 8430.41 or 8430.49, of offshore oil and natural gas drilling and production platforms.",
        "Its legal text is “Of offshore oil and natural gas drilling and production platforms”, read under “Of machinery of heading 8426, 8429 or 8430” and “Parts for boring or sinking machinery of subheading 8430.41 or 8430.49”."
      ]
    },
    {
      "id": "structure",
      "title": "How it is structured",
      "text": [
        "It falls under HS subheading 8431.43 in heading 84.31 (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": [
        "Goods under this line enter free of general (MFN) duty."
      ]
    },
    {
      "id": "other-countries",
      "title": "In other countries",
      "text": [
        "No other national tariff on border.bot has live lines under 8431.43 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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      "name": "United States",
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    "localTaxes": [],
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    "dateModified": "2026-10-09T21:15:58.040Z",
    "chapter": {
      "code": "84",
      "description": "Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof"
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    "heading": {
      "code": "8431",
      "description": "Parts suitable for use solely or principally with the machinery of headings 8425 to 8430"
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      "code": "843143",
      "description": "Of machinery of heading 8426, 8429 or 8430: Parts for boring or sinking machinery of subheading 8430 41 or 8430 49"
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      "code": "8431434000",
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        "Of offshore oil and natural gas drilling and production platforms"
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      "english": null,
      "keywords": [],
      "lang": "en",
      "general": {
        "code": "8431434000",
        "dutyText": "Free",
        "startDate": null,
        "endDate": null,
        "unit": null
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      "measures": [],
      "restrictions": []
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        "code": "8431438020",
        "description": "Tool joints, whether or not forged"
      },
      {
        "code": "8431438040",
        "description": "Drill pipe fitted with tool joints"
      },
      {
        "code": "8431438060",
        "description": "Other"
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      {
        "code": "8431438090",
        "description": "Of other boring or sinking machinery"
      }
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    "siblingsTotal": 4,
    "previous": {
      "code": "8431420000",
      "description": "Bulldozer or angledozer blades",
      "indexable": true
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      "indexable": true
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    "size": 100,
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  "code": "8431434000",
  "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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