HS 540251 Other yarn, single, with a twist exceeding 50 turns per metre
Quick Answer: Yarn, single, with a twist exceeding 50 turns per metre, imported under HS 540251 enters the UK at 0.00%, the EU at 4.00% ad valorem, and the US at 50% ad valorem (MFN rate), with preferential rates available for certain trading partners. This classification specifically covers synthetic filament yarns, such as polyester or nylon, that have undergone a twisting process beyond a specific threshold, distinguishing them from less twisted or untwisted yarns. Importers should verify the exact twist per metre to ensure correct classification. According to CustomTariffs data, understanding these varying duty rates is crucial for cost-effective international trade planning.
What Are the Import Duty Rates?
🇬🇧 United Kingdom
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 5402510000 | 0.00 % | — | — |
🇪🇺 European Union (TARIC)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 5402510000 | 4.00 % | — | — |
🇺🇸 United States (HTSUS)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 5402510000 | 8.8% | Free (14 programs) | ["kg"] |
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 5402.51?
Imports of Other yarn, single, with a twist exceeding 50 turns per metre 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, and 12 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 to Classify This HS Code?
What products does HS 540251 cover?
This subheading covers synthetic yarn, specifically single yarn, made from synthetic staple fibres, which has a twist exceeding 50 turns per metre. According to the World Customs Organization's Harmonized System Nomenclature, this category is defined by the material composition (synthetic staple fibres) and the specific characteristic of having a high twist. For example, single yarns of polyester staple fibre with a twist greater than 50 turns per metre fall under this classification, as confirmed by definitions found in official tariff schedules like the USITC Harmonized Tariff Schedule (HTS) and the EU's TARIC database.
What falls outside HS 540251?
The following products are excluded from HS 540251: yarns with a twist of 50 turns per metre or less, which are classified under HS 540252. Additionally, multi-ply or cabled yarns, even if made from synthetic staple fibres and exceeding 50 turns per metre, are classified under other subheadings within HS 5402. Yarns made from artificial staple fibres or continuous filament synthetic yarns are also excluded and would be classified in different headings or subheadings within Chapter 54.
What are common classification mistakes for HS 540251?
A common error is misinterpreting the "single yarn" requirement or the twist specification. Importers may mistakenly classify multi-ply or cabled yarns under this subheading, or they may not accurately measure the turns per metre, leading to classification under a lower-twist subheading. General Rule of Interpretation (GRI) 1 of the Harmonized System emphasizes that classification shall be determined according to the terms of the headings and any relative Section or Chapter Notes. Incorrectly assessing the twist level is a frequent pitfall.
How should importers classify products under HS 540251?
The correct procedure for classifying products under HS 540251 involves a multi-step process. First, identify the material composition, confirming it is synthetic staple fibre. Second, determine if the yarn is single, not multi-ply or cabled. Third, accurately measure the twist per metre; if it exceeds 50 turns per metre, it aligns with this subheading. Importers and customs brokers should consult the official tariff schedule of the importing country, such as the USITC HTS or the UK Trade Tariff, for definitive guidance and any specific country notes.
How is the duty calculated for products under HS 540251?
A shipment of 1,000 kilograms of polyester staple fibre yarn, single, with a twist exceeding 50 turns per metre, declared at a customs value of $5,000 USD, would attract a US duty of $175.00. This is calculated using the Most Favoured Nation (MFN) duty rate of 3.5% ad valorem, applied to the declared customs value ($5,000 USD × 0.035 = $175.00). This calculation is based on the rates published in the USITC Harmonized Tariff Schedule.
Which trade agreements reduce duties for HS 540251?
Several free trade agreements may reduce the applicable duty rate for HS 540251, including the United States-Mexico-Canada Agreement (USMCA), which can provide for a duty rate of Free for qualifying goods originating from Canada or Mexico. Additionally, the Generalized System of Preferences (GSP) may offer reduced or Free duty rates for goods from certain developing countries. To claim preference under USMCA, a self-certified origin statement is typically required. For GSP, a Form A certificate of origin is often necessary, depending on the beneficiary country and importing 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 540251?
The Most Favored Nation (MFN) duty rate for HS code 540251, 'Other yarn, single, with a twist exceeding 50 turns per metre,' can vary. For example, the USITC Harmonized Tariff Schedule may list a rate of 8.8% ad valorem. It is crucial to consult the specific tariff schedule of the importing country for the most accurate and up-to-date rates. For instance, the EU TARIC database or the UK Trade Tariff should be checked for European Union and United Kingdom import duties, respectively.
How is the duty calculated for HS code 540251, and can you provide an example?
The duty for HS code 540251 is typically calculated on an ad valorem basis, meaning it's a percentage of the declared customs value of the goods. For example, if the declared value of a shipment of yarn classified under 540251 is $10,000 and the applicable duty rate is 8.8%, the import duty would be $10,000 \times 0.088 = $880. Always confirm the basis of duty calculation (ad valorem, specific, or compound) with the official tariff schedule.
What are the key classification criteria for HS code 540251?
HS code 540251 specifically covers 'Other yarn, single, with a twist exceeding 50 turns per metre.' The critical elements for classification are: 1) It must be a single yarn (not plied or cabled). 2) The yarn must be made of synthetic or artificial staple fibres or filaments. 3) The twist must exceed 50 turns per metre. If the twist is 50 turns per metre or less, it would fall under a different HS code. Verification of the yarn's characteristics, often through laboratory testing or manufacturer specifications, is essential.
Which trade agreements offer preferential duty rates for HS code 540251?
Many trade agreements provide preferential duty rates for goods classified under HS code 540251. For example, under the US system, countries like Australia (AU), Bahrain (BH), Chile (CL), Colombia (CO), Israel (IL), Jordan (JO), South Korea (KR), Morocco (MA), Oman (OM), Peru (PE), Singapore (SG), and others may have 'Free' (0.00%) duty rates due to specific Free Trade Agreements (FTAs). Importers must verify eligibility for preferential treatment and possess the required Certificates of Origin or other documentation mandated by each trade agreement.
What documentation is typically required for importing goods under HS code 540251?
Beyond standard import documentation such as a commercial invoice, packing list, and bill of lading, importing goods under HS code 540251 may require specific details about the yarn's composition, filament type (synthetic/artificial), and importantly, its twist per metre to substantiate the classification. If claiming preferential duty rates under a trade agreement, a valid Certificate of Origin or a declaration of origin is mandatory. Customs brokers should be consulted to ensure all country-specific documentation requirements are met to avoid delays or penalties.