HS 843143 Parts for boring or sinking machinery of subheading 8430 41 or 8430 49
Quick Answer: Parts for boring or sinking machinery imported under HS 843143 enter the UK at 0.00%, the EU at 0.00%, and the US at Free (MFN rate) for most lines. This classification specifically covers components and spare parts designed for use with boring or sinking machinery, such as those used in mining, construction, or oil and gas exploration. Significant trade considerations include the generally duty-free entry in major markets, simplifying import processes. Importers and customs brokers should verify specific part applicability to ensure correct classification and consult CustomTariffs for detailed tariff line information and any potential exceptions or specific country requirements.
What Are the Import Duty Rates?
🇬🇧 United Kingdom
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 8431430000 | 0.00 % | — | — |
| 8431430011 | 0.00 % | — | — |
| 8431430090 | 0.00 % | — | — |
🇪🇺 European Union (TARIC)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 8431430000 | 0.00 % | — | — |
| 8431430011 | 0.00 % | — | — |
| 8431430090 | 0.00 % | — | — |
🇺🇸 United States (HTSUS)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 8431434000 | Free | — | ["No."] |
| 8431438040 | — | — | ["No."] |
| 8431438090 | — | — | ["No."] |
| 843143 | — | — | — |
| 84314380 | Free | — | — |
Duty rates sourced from the USITC (US International Trade Commission) Harmonized Tariff Schedule (HTS) (accessed 2/22/2026), EU TARIC – DG TAXUD (Directorate-General for Taxation and Customs Union) (accessed 2/22/2026), and UK Trade Tariff – HMRC (His Majesty's Revenue and Customs) (accessed 2/22/2026).
Data compiled and presented by HSRates.
How to Classify This HS Code?
What products does HS 843143 cover?
This subheading covers specific parts and accessories designed exclusively for boring or sinking machinery falling under HS subheadings 8430.41 (self-propelled boring or sinking machinery) and 8430.49 (other boring or sinking machinery). According to the World Customs Organization's Harmonized System Explanatory Notes, this includes components like drill heads, casings, drill pipes, and specialized tools integral to the operation of such machinery used in excavation, mining, and construction. The USITC Harmonized Tariff Schedule (HTS) and the EU's TARIC database confirm this scope, emphasizing the specialized nature of these parts.
What falls outside HS 843143?
The following products are excluded from HS 843143: general-purpose tools or parts that could be used on various types of machinery, not exclusively boring or sinking equipment. This includes standard fasteners, generic electrical components, or structural elements not specifically engineered for the unique demands of boring or sinking operations. For instance, standard bolts, nuts, or generic hydraulic hoses would typically be classified under their respective headings, such as 7318 for screws and bolts or 4009 for tubes and pipes of rubber.
What are common classification mistakes for HS 843143?
A common error is misclassifying parts that are not exclusively designed for boring or sinking machinery. General-purpose components that might be adapted for such use, but are not specifically manufactured for them, should be classified elsewhere. For example, a generic electric motor might be used in a boring machine, but if it's not specifically designed for that application and is also suitable for other machines, it would fall under heading 8501. Adherence to General Rule of Interpretation (GRI) 1 and 3(b) is crucial for determining the essential character of the part.
How should importers classify products under HS 843143?
The correct procedure for classifying products under HS 843143 involves a thorough examination of the part's design, function, and intended use. Importers and customs brokers must consult the official tariff schedule of the importing country, such as the USITC HTS or the UK Trade Tariff, and review the Explanatory Notes from the WCO. It is essential to confirm that the part is specifically manufactured for and exclusively used with boring or sinking machinery classified under 8430.41 or 8430.49.
How is the duty calculated for products under HS 843143?
A specialized drill bit for a tunnel boring machine weighing 50 kg and declared at a customs value of $5,000 USD would attract a US duty. Assuming a Most Favored Nation (MFN) duty rate of 2.5% ad valorem, the duty would be calculated as 2.5% of $5,000, resulting in $125.00. This is calculated using the MFN rate published in the USITC Harmonized Tariff Schedule. If the duty were based on weight, a specific rate per kilogram would be applied instead.
Which trade agreements reduce duties for HS 843143?
Several free trade agreements may reduce the applicable duty rate for HS 843143, including the United States-Mexico-Canada Agreement (USMCA), which can result in a 0% duty for qualifying goods originating from Canada or Mexico. The Comprehensive and Progressive Agreement for Trans-Pacific Partnership (CPTPP) also offers preferential rates, potentially 0%, for eligible goods from member countries like Japan. To claim these preferences, a self-certified origin statement or a specific origin declaration is typically required, depending on the agreement and jurisdiction.
```Which HS Codes Are Related?
Not the right code? Search all HS codes to find the correct tariff classification.
FAQ
What are the typical import duty rates for HS code 843143 in the United States?
For HS code 843143, which covers parts for boring or sinking machinery, the U.S. Most Favored Nation (MFN) duty rate is typically 0.00% ad valorem. This means there is generally no duty applied under the standard tariff schedule. However, importers should always verify the current duty rate on the U.S. International Trade Commission (USITC) website, as rates can be subject to change or specific trade agreements might apply. For example, if a part valued at $10,000 is imported, the duty would be $10,000 \times 0.00% = $0.00.
How is HS code 843143 classified, and what are the key criteria for its determination?
HS code 843143 is specifically for 'Parts for boring or sinking machinery of subheading 8430 41 or 8430 49'. The classification hinges on whether the part is exclusively or principally designed for use with boring or sinking machinery that is self-propelled or has a built-in motor (subheading 8430 41) or other boring or sinking machinery (subheading 8430 49). Key criteria include the specific function of the part, its design characteristics, and its intended application. If a part is general-purpose and could be used with various types of machinery, it would likely be classified elsewhere. Consulting the Explanatory Notes to the Harmonized System for heading 8431 and subheading 8430 is crucial for accurate classification.
Are there any preferential duty rates available for HS code 843143 under trade agreements?
While the U.S. MFN rate for HS code 843143 is often 0.00%, importers should investigate preferential rates under applicable trade agreements. For instance, if the goods originate from a country with a Free Trade Agreement (FTA) with the United States, such as Canada or Mexico under the USMCA, a 0.00% duty rate might still apply, but specific rules of origin must be met. Importers must obtain a Certificate of Origin from the exporter to claim preferential treatment. Always refer to the specific text of the relevant trade agreement and consult customs regulations for detailed requirements.
What documentation is typically required when importing parts classified under HS code 843143?
When importing parts under HS code 843143, standard import documentation is generally required. This includes a commercial invoice detailing the value, quantity, and description of the goods; a packing list; and a bill of lading or air waybill. For preferential duty claims, a Certificate of Origin is essential. Depending on the specific nature of the machinery these parts are for, additional certifications or permits might be necessary. It is advisable for importers and customs brokers to consult U.S. Customs and Border Protection (CBP) regulations and the Harmonized Tariff Schedule (HTS) for any specific requirements related to machinery parts.
How is the import duty calculated for HS code 843143 if a duty rate other than 0.00% were applicable?
The duty for HS code 843143 is typically calculated on an ad valorem basis, meaning it's a percentage of the declared customs value of the imported goods. For example, if a part for boring machinery was subject to a hypothetical duty rate of 5% ad valorem, and the declared customs value of the shipment was $50,000, the duty calculation would be: $50,000 (Customs Value) \times 5% (Duty Rate) = $2,500 (Import Duty). While the U.S. MFN rate is currently 0.00%, understanding this calculation method is important for other goods or potential future changes in tariff rates.