HS 846610 Tool holders and self-opening dieheads

Quick Answer: Tool holders and self-opening dieheads imported under HS 846610 enter the UK duty-free, the EU at 1.20% ad valorem, and the US at 3.9% ad valorem under the MFN rate. This classification covers devices designed to hold cutting tools or dies in machine tools, facilitating their secure attachment and efficient operation. Self-opening dieheads are specifically for threading operations, automatically retracting after the thread is cut. Importers should be aware of potential variations in duty rates based on preferential trade agreements, particularly in the US market where numerous free trade agreements offer duty exemptions. CustomTariffs aggregates this data, highlighting the importance of verifying specific country-specific rates for accurate landed cost calculations.

What Are the Import Duty Rates?

🇬🇧 United Kingdom

Code MFN Preferential Unit
8466100000
8466102000 0.00 %
8466103100 0.00 %
8466103800 0.00 %
8466108000 0.00 %

🇪🇺 European Union (TARIC)

Code MFN Preferential Unit
8466100000
8466102000 1.20 %
8466103100 1.20 %
8466103800 1.20 %
8466108000 1.20 %

🇺🇸 United States (HTSUS)

Code MFN Preferential Unit
8466100110 ["No."]
8466100175 ["No."]
84661001 3.9% Free (18 programs)
8466100130 ["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 8466.10?

Imports of Tool holders and self-opening dieheads 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 16 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?

```html

What products does HS 846610 cover?

This subheading covers tool holders and self-opening dieheads, as defined by the World Customs Organization's Harmonized System Nomenclature. These are essential accessories for machine tools, designed to securely grip cutting tools or dies and facilitate their automatic opening or closing during operation. Official definitions from sources like the USITC Harmonized Tariff Schedule (HTS) and the EU's TARIC database confirm that this category includes chucks, collets, arbors, and die heads used in metalworking and other machining processes, excluding parts and accessories of general-purpose machine tools that are not specifically designed for these functions.

What falls outside HS 846610?

The following products are excluded from HS 846610: general-purpose machine tool parts and accessories not specifically designed for tool holding or diehead functions, such as basic fasteners, lubricants, or general structural components. Additionally, hand-operated tools, even if they perform a similar function, are typically classified elsewhere. For instance, manual die stocks for threading pipes are usually found in heading 8203, and simple drill chucks designed for hand drills would not fall under this subheading.

What are common classification mistakes for HS 846610?

A common error is misclassifying components or sub-assemblies of tool holders or dieheads as separate parts under heading 8466, rather than classifying the complete assembly under 846610. This often occurs when importers do not fully understand the scope of the complete article. Furthermore, confusion can arise with accessories for specific machine tools that are not universally applicable tool holders, potentially leading to classification under broader machine tool accessory headings, contrary to General Rule of Interpretation 1 (GRI 1) which prioritizes the most specific description.

How should importers classify products under HS 846610?

The correct procedure for classifying products under HS 846610 involves a thorough examination of the product's design, function, and intended use. Importers and customs brokers should consult the official tariff schedules of the importing country, such as the USITC HTS or the UK Trade Tariff, and refer to the Explanatory Notes of the WCO HS Nomenclature. It is crucial to determine if the item is specifically a tool holder or a self-opening diehead, and to confirm it is not a part or accessory of a general-purpose machine tool that belongs to a different classification.

How is the duty calculated for products under HS 846610?

A specific ER collet chuck weighing 1.5 kg and declared at a customs value of $250 USD would attract a US duty of $12.50. This is calculated using the Most Favored Nation (MFN) duty rate of 5.0% ad valorem, applied to the declared value: 5.0% × $250 USD = $12.50. This calculation is based on the rates published in the USITC Harmonized Tariff Schedule for subheading 8466.10.0000.

Which trade agreements reduce duties for HS 846610?

Several free trade agreements may reduce the applicable duty rate for HS 846610, 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 reduced or Free duty rates for eligible goods from certain developing countries. 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 jurisdiction.

```

Which HS Codes Are Related?

Not the right code? Search all HS codes to find the correct tariff classification.

FAQ

What are the primary classification criteria for HS code 8466.10, covering 'Tool holders and self-opening dieheads'?

HS code 8466.10 specifically covers devices designed to hold cutting tools or workpieces on machine tools, or self-opening dieheads used for threading. Key classification criteria include the item's function (holding tools/workpieces, threading), its intended use with specific types of machine tools (e.g., milling, drilling, turning), and its mechanical design. Items that are merely accessories or general-purpose clamps not specifically designed for machine tool operations would likely fall under different headings. For instance, a chuck that attaches to a drill press spindle to hold a drill bit is a tool holder within this code, whereas a vise used on a workbench might not be.

What are the typical import duty rates for HS code 8466.10 in major markets like the US, EU, and UK, and how are preferential rates applied?

Import duty rates for HS code 8466.10 vary by country and trade agreement. In the United States, the Most Favored Nation (MFN) duty rate is typically 3.9% ad valorem. The European Union's TARIC system often shows a duty rate of 1.2% ad valorem for goods from most third countries, though specific preferential rates may apply under agreements like the EU-Japan EPA or EU-EFTA agreements. The UK Trade Tariff also lists rates, often around 1.2% ad valorem for standard imports, with potential reductions or duty-free access under agreements such as the UK-Japan CEPA or UK-Switzerland agreement. Importers must consult the specific tariff schedule of the importing country and verify eligibility for preferential rates based on the origin of the goods and applicable trade agreements. For example, goods originating from countries with a Free Trade Agreement (FTA) with the importing country may benefit from reduced or zero duties if they meet the rules of origin.

Can you provide a numerical example of how import duty is calculated for HS code 8466.10?

Certainly. Let's assume an importer is bringing in tool holders classified under HS code 8466.10 into the United States. The MFN duty rate is 3.9% ad valorem. If the declared customs value of the shipment of tool holders is $10,000 USD, the import duty would be calculated as follows: Duty Amount = Customs Value × Duty Rate. Duty Amount = $10,000 USD × 3.9% (or 0.039). Duty Amount = $390 USD. In this scenario, the importer would owe $390 USD in import duties.

What documentation is typically required when importing items classified under HS code 8466.10?

When importing tool holders and self-opening dieheads under HS code 8466.10, 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 transport. Crucially, importers must provide a clear and accurate description of the goods that supports the HS classification. Depending on the importing country and the origin of the goods, a Certificate of Origin may be necessary to claim preferential duty rates under a Free Trade Agreement. Customs brokers should ensure that the product's technical specifications are readily available to substantiate the classification if requested by customs authorities.

Which common trade agreements offer preferential duty rates for HS code 8466.10, and what is the general impact on importers?

Several trade agreements can offer preferential duty rates for HS code 8466.10. For example, the United States has FTAs with countries like Australia, Chile, and South Korea, which may provide duty-free or reduced-duty access for eligible goods originating from these countries. The EU has numerous FTAs, including with Canada (CETA), Japan (EPA), and Mercosur, potentially lowering duties for qualifying imports. The UK has agreements with countries such as Singapore and Vietnam. The general impact for importers is a significant reduction in landed costs, making goods from partner countries more competitive. To benefit, importers must ensure the goods meet the specific 'rules of origin' stipulated in each agreement and possess the correct documentation, typically a Certificate of Origin, to prove eligibility.