HS 846320 Thread-rolling machines
Quick Answer: Thread-rolling machines imported under HS 846320 enter the UK at 2.00%, the EU at 2.70%, and the US at 4.4% under the MFN rate. This HS code covers machines specifically designed for forming threads on screws, bolts, and similar fasteners by rolling, rather than cutting. These machines utilize dies that impress the thread form onto the workpiece. Importers should note the US offers duty-free entry for certain trading partners, as detailed in its tariff schedule. CustomTariffs aggregates this information, highlighting potential cost savings for eligible trade.
What Are the Import Duty Rates?
🇬🇧 United Kingdom
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 8463200000 | 2.00 % | — | — |
🇪🇺 European Union (TARIC)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 8463200000 | 2.70 % | — | — |
🇺🇸 United States (HTSUS)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 84632000 | 4.4% | Free (17 programs) | — |
| 8463200060 | — | — | ["No."] |
| 8463200040 | — | — | ["No."] |
| 8463200080 | — | — | ["No."] |
Special rates available under trade agreements including USMCA, KORUS, GSP.
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.
Which Trade Agreements Reduce Duties for HS 8463.20?
Imports of Thread-rolling machines may qualify for reduced or zero duty rates under free trade agreements and preferential programs. The overview below shows available preferential arrangements by jurisdiction, compiled by HSRates from official tariff and trade agreement data.
United States (HTSUS)
Free for USMCA, KORUS, GSP, and 14 other programs
European Union (TARIC)
Preferential rate data not yet available.
United Kingdom
Preferential rate data not yet available.
Preferential rates require proof of origin and may be subject to quotas or conditions. Always verify eligibility with a licensed customs broker.
Data compiled by HSRates.
Which Preferential Rates Apply to Your Origin Country?
Select an origin country to see if preferential rates apply.
Preferential rates based on available trade agreements. Actual rates may vary.
How Has Trade Volume Developed?
Trade Volume 2023
How to Classify This HS Code?
What products does HS 846320 cover?
This subheading covers thread-rolling machines, which are specialized machine tools designed for the cold forming of threads on screws, bolts, and other fasteners. According to the World Customs Organization's Harmonized System Explanatory Notes, these machines operate by using dies (either flat, cylindrical, or planetary) to displace metal and create the desired thread profile. The USITC Harmonized Tariff Schedule (HTS) and the EU's TARIC database confirm that machines specifically dedicated to rolling threads, as opposed to cutting or grinding them, fall under this classification, often featuring mechanisms for feeding and rotating the workpiece against the rolling dies.
What falls outside HS 846320?
The following products are excluded from HS 846320: general-purpose machine tools that may incidentally perform thread rolling but are not exclusively designed for it, such as certain multi-purpose lathes or machining centers. Also excluded are machines for cutting threads (e.g., thread-cutting lathes or die heads), grinding threads, or machines for producing threads by other methods like casting or extrusion. For instance, a universal milling machine equipped with a thread-rolling attachment would be classified under its primary function, not under 846320, and a tapping machine for internal threads is classified elsewhere in Chapter 84.
What are common classification mistakes for HS 846320?
A common error is misclassifying machines that perform thread-forming operations but are not exclusively thread-rolling machines. For example, machines that cut or grind threads are classified under different headings within Chapter 84. According to General Rule of Interpretation (GRI) 3(a), when goods are prima facie classifiable under two or more headings, the heading which provides the most specific description shall be preferred. Importers may also incorrectly classify multi-functional machines that include thread rolling as a secondary operation, failing to recognize that the primary function dictates the classification.
How should importers classify products under HS 846320?
The correct procedure for classifying products under HS 846320 involves a thorough examination of the machine's primary function and design. 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 of the Harmonized System. Key considerations include whether the machine is specifically designed for cold forming threads using dies and whether it is a standalone unit or an attachment to a more general-purpose machine tool. Verification of the manufacturer's specifications and intended use is crucial.
How is the duty calculated for products under HS 846320?
A German-manufactured "Rollomatic" thread-rolling machine, weighing 2,500 kg and declared at a customs value of $75,000 USD, would attract a US duty of $2,250. This is calculated using the Most Favored Nation (MFN) rate of 3.0% ad valorem, as published in the USITC Harmonized Tariff Schedule (HTS) for subheading 8463.20. The calculation is: $75,000 (declared value) × 0.03 (duty rate) = $2,250 (duty amount). This specific rate applies to imports from countries not benefiting from preferential trade agreements.
Which trade agreements reduce duties for HS 846320?
Several free trade agreements may reduce the applicable duty rate for HS 846320, including the United States-Mexico-Canada Agreement (USMCA), which can result in a duty rate of Free for qualifying goods originating from Canada or Mexico. Additionally, the Generalized System of Preferences (GSP) may offer duty-free entry for eligible goods from certain developing countries, such as India. To claim these preferences, importers typically require a self-certified origin statement for USMCA or a GSP Form A for GSP beneficiaries, depending on the specific requirements of the importing country's customs authority.
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FAQ
What are the typical import duty rates for HS code 846320 (Thread-rolling machines)?
The Most Favored Nation (MFN) duty rate for HS code 846320 can vary. For instance, the U.S. tariff rate is 2.00% ad valorem. However, preferential rates are available under various trade agreements. For example, imports from Australia (AU), Bahrain (BH), Chile (CL), Colombia (CO), South Korea (KR), and Singapore (SG) may be eligible for duty-free entry (Free). It is crucial to consult the specific tariff schedule of the importing country and verify eligibility for preferential treatment based on the origin of the goods and applicable trade agreements.
How is the import duty for a thread-rolling machine calculated under HS 846320?
The duty calculation for HS code 846320 is typically based on the ad valorem method, meaning a percentage of the declared customs value of the imported machine. For example, if a thread-rolling machine is valued at $50,000 USD and the MFN duty rate is 2.00%, the import duty would be calculated as: $50,000 (Value) × 0.02 (Duty Rate) = $1,000 USD. Always ensure the customs value is determined according to the importing country's valuation rules.
What are the key classification criteria for machines classified under HS 846320?
HS code 846320 specifically covers 'Thread-rolling machines'. The primary classification criterion is the machine's function: its ability to form screw threads by rolling, typically using dies or rollers that impress the thread form onto the workpiece. Machines that cut threads or perform other metal forming operations would generally fall under different HS codes. Verification often involves reviewing the machine's specifications, operational manuals, and potentially requesting a binding ruling from customs authorities.
Which common trade agreements offer preferential duty rates for HS 846320?
Several trade agreements can provide preferential duty rates for machines classified under HS 846320. For example, the United States has agreements with countries like Australia (AU), Bahrain (BH), Chile (CL), Colombia (CO), South Korea (KR), and Singapore (SG) that may grant duty-free entry. The European Union's TARIC system and the UK Trade Tariff also list preferential rates for various partner countries. Importers must ensure that the goods meet the rules of origin stipulated in the relevant trade agreement to qualify for these reduced or eliminated duties.
What documentation is typically required when importing thread-rolling machines under HS 846320?
When importing thread-rolling machines under HS 846320, standard import documentation is required, including a commercial invoice, packing list, and bill of lading or air waybill. Additionally, proof of origin is crucial if claiming preferential duty rates under a trade agreement. Depending on the importing country and the specific machine, safety certifications, technical specifications, and an import declaration may also be necessary. Consulting the customs authority of the destination country is recommended for a comprehensive list.