UK Global Tariff · commodity code · HS 6804.21
6804 21 00 50: Wheels suitable for grinding, rounding, polishing, aligning or cutting: -composed of metal base and agglomerated synthetic or natural diamonds, -whether or not containing a hole in the centre, -with an external diameter not more than 870 mm, for machines for the manufacture of semiconductor wafers
Diamond grinding wheels
✓ Can be used in a customs declaration Data: UK Global Tariff · checked on 24 October 2026
- 6804 Millstones, grindstones, grinding wheels and the like, without frameworks, for grinding, sharpening, polishing, trueing or cutting, hand sharpening or polishing stones, and parts thereof, of natural stone, of agglomerated natural or artificial abrasives, or of ceramics, with or without parts of other materials
- Other millstones, grindstones, grinding wheels and the like
- 6804 21 00 00 Of agglomerated synthetic or natural diamond
- 6804 21 00 50 Wheels suitable for grinding, rounding, polishing, aligning or cutting: -composed of metal base and agglomerated synthetic or natural diamonds, -whether or not containing a hole in the centre, -with an external diameter not more than 870 mm, for machines for the manufacture of semiconductor wafers
What you pay
Importing into UK
Additional duties and import rules
Charges on top of the customs duty, and rules the goods must meet at the border.
Additional duties and charges 2
- Additional dutyAdditional duties 35%
- Applies to goods from
- Belarus, Russia
- Legal act
- 2022 No. 598
- Documents
- 9014
- Duty suspensionSuspension - goods for certain categories of ships, boats and other vessels and for drilling or production platforms Free
- Applies to goods from
- all countries
- Legal act
- 2020 No. 1431
- Documents
- C990 End use authorisation ships and platforms (Column 8c, Annex A of Delegated Regulation (EU) 2015/2446)
Import requirements 4
- Prohibition or restrictionImport prohibition
- Applies to goods from
- North Korea
- Legal act
- S.I. 2019/411
- Import controlRestriction on entry into free circulation
- Applies to goods from
- Ukraine
- Legal act
- S.I. 2022/395
- Documents
- 9009
- 9010
- 9017
- Import controlImport control on restricted goods and technologies
- Applies to goods from
- Iran
- Legal act
- S.I. 2019/461
- Documents
- Y966 Goods other than those described in the MG footnotes linked to the measure (Missile Technology Control Regime list - Annex III of Reg. (EU) 267/2012)
- Import controlImport control - Waste
- Applies to goods from
- all countries
- Legal act
- S.I. 2019/590
- Documents
- C672 Information document accompanying shipments of waste as mentioned in Regulation (EU) 2024/1157 – Article 18 and Annex VII
- C669 Notification document as mentioned in Regulation (EU) 2024/1157 - Article 5 and Annex IA
- Y923 Product not subjected to the provisions of Regulation (EU) 2024/1157
- C670 Movement document as mentioned in Regulation (EU) 2024/1157 – Article 5 and Annex IB
Preferential rates by country
| Agreement or scheme | Countries | Rate |
|---|---|---|
| standard rate (no agreement) | — | Free |
| DCTS Comprehensive | Afghanistan, Angola, Bangladesh, Benin and 38 moreAfghanistan, Angola, Bangladesh, Benin, Bhutan, Burkina Faso, Burundi, Cambodia, Central African Republic, Chad, Comoros, Congo - Kinshasa, Djibouti, Eritrea, Ethiopia, Gambia, Guinea, Guinea-Bissau, Haiti, Kiribati, Laos, Liberia, Malawi, Mali, Mauritania, Myanmar (Burma), Nepal, Niger, Rwanda, São Tomé & Príncipe, Senegal, Sierra Leone, Somalia, South Sudan, Sudan, Tanzania, Timor-Leste, Togo, Tuvalu, Uganda, Yemen, Zambia | Free |
| European Union (including code " EU") | Free | |
| DCTS Enhanced | Algeria, Bolivia, Cape Verde, Congo - Brazzaville and 13 moreAlgeria, Bolivia, Cape Verde, Congo - Brazzaville, Cook Islands, Kyrgyzstan, Micronesia, Mongolia, Nigeria, Niue, Pakistan, Philippines, Sri Lanka, Syria, Tajikistan, Uzbekistan, Vanuatu | Free |
| CARIFORUM | Antigua & Barbuda, Bahamas, Barbados, Belize and 10 moreAntigua & Barbuda, Bahamas, Barbados, Belize, Dominica, Dominican Republic, Grenada, Guyana, Jamaica, St Kitts & Nevis, St Lucia, St Vincent & the Grenadines, Suriname, Trinidad & Tobago | Free |
| OCTs (Overseas Countries and Territories) | Anguilla, Bermuda, British Indian Ocean Territory, British Virgin Islands and 7 moreAnguilla, Bermuda, British Indian Ocean Territory, British Virgin Islands, Cayman Islands, Falkland Islands, Montserrat, Pitcairn Islands, South Georgia & South Sandwich Islands, St Helena, Turks & Caicos Islands | Free |
| Central America | Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua, Panama | Free |
| SADC EPA | Botswana, Eswatini, Lesotho, Mozambique, Namibia | Free |
| Eastern and Southern Africa States | Madagascar, Mauritius, Seychelles, Zimbabwe | Free |
| CPTPP | Brunei, Malaysia | Free |
| UK–Andorra agreement | Andorra | Free |
| UK–Albania agreement | Albania | Free |
| UK–Australia agreement | Australia | Free |
| UK–Canada agreement | Canada | Free |
| UK–Switzerland agreement | Switzerland | Free |
| UK–Côte d’Ivoire agreement | Côte d’Ivoire | Free |
| UK–Chile agreement | Chile | Free |
| UK–Cameroon agreement | Cameroon | Free |
| UK–Colombia agreement | Colombia | Free |
| UK–Ceuta & Melilla agreement | Ceuta & Melilla | Free |
| UK–Ecuador agreement | Ecuador | Free |
| UK–Egypt agreement | Egypt | Free |
| UK–Fiji agreement | Fiji | Free |
| UK–Faroe Islands agreement | Faroe Islands | Free |
| UK–Georgia agreement | Georgia | Free |
| UK–Ghana agreement | Ghana | Free |
| DCTS Standard | Indonesia | Free |
| UK–Israel agreement | Israel | Free |
| UK–India agreement | India | Free |
| UK–Iceland agreement | Iceland | Free |
| UK–Jordan agreement | Jordan | Free |
| UK–Japan agreement | Japan | Free |
| UK–Kenya agreement | Kenya | Free |
| UK–South Korea agreement | South Korea | Free |
| UK–Lebanon agreement | Lebanon | Free |
| UK–Liechtenstein agreement | Liechtenstein | Free |
| UK–Morocco agreement | Morocco | Free |
| UK–Moldova agreement | Moldova | Free |
| UK–North Macedonia agreement | North Macedonia | Free |
| UK–Mexico agreement | Mexico | Free |
| UK–Norway agreement | Norway | Free |
| UK–New Zealand agreement | New Zealand | Free |
| UK–Peru agreement | Peru | Free |
| UK–Papua New Guinea agreement | Papua New Guinea | Free |
| UK–Palestinian Territories agreement | Palestinian Territories | Free |
| UK–Serbia agreement | Serbia | Free |
| UK–Solomon Islands agreement | Solomon Islands | Free |
| UK–Singapore agreement | Singapore | Free |
| UK–San Marino agreement | San Marino | Free |
| UK–Tunisia agreement | Tunisia | Free |
| UK–Türkiye agreement | Türkiye | Free |
| UK–Ukraine agreement | Ukraine | Free |
| UK–Vietnam agreement | Vietnam | Free |
| UK–Samoa agreement | Samoa | Free |
| UK–Kosovo agreement | Kosovo | Free |
| UK–South Africa agreement | South Africa | Free |
Footnotes
TN207 The Democratic People’s Republic of Korea (Sanctions) (EU Exit) Regulations 2019 impose tr…
TN209 The Iran (Sanctions) (Nuclear) (EU Exit) Regulations 2019 impose trade restrictions on cer…
TN701 According to the Council Regulation (EU) No 692/2014 (OJ L183, p. 9), as retained in UK La…
The prohibition shall not apply in respect of:
(a) the execution until 26 September 2014, of trade contracts concluded before 25 June 2014, or of ancillary contracts necessary for the execution of such contracts, provided that the natural or legal persons, entity or body seeking to perform the contract have notified, at least 10 working days in advance, the activity or transaction to the competent authority of the Member State in which they are established.
(b) goods originating in Crimea or Sevastopol which have been made available to the Ukrainian authorities for examination, for which compliance with the conditions conferring entitlement to preferential origin has been verified and for which a certificate of origin has been issued in accordance with Regulation (EU) No 978/2012 and Regulation (EU) No 374/2014, as retained in UK Law, or in accordance with the EU-Ukraine Association Agreement
UK: imports by month · HS 6804.21
Main suppliers, last 12 months
| Country | Value | Share | Change |
|---|---|---|---|
 China | £8.4m | 31.4% | -4.4% |
 Italy | £3.2m | 12.2% | +12.9% |
 South Korea | £3m | 11.4% | -1.2% |
 Germany | £2.1m | 8% | +14.4% |
 Spain | £1.7m | 6.4% | -3.5% |
 Austria | £1m | 3.8% | -5.2% |
 Japan | £949k | 3.6% | -2.1% |
 United States | £895k | 3.4% | -25.9% |
Same subheading in other tariffs
6804.21 Of agglomerated synthetic or natural diamond
EU 1.7% Third-country duty 1 tariff line 
Türkiye 1.7% Third-country duty 3 tariff lines USA Free General (MFN) 1 tariff line 
Canada Free Third-country duty 1 tariff line 
Mexico Free Third-country duty 2 tariff lines 
Brazil 5.4% Third-country duty 3 tariff lines 
Argentina 5.4% Third-country duty 3 tariff lines 
Peru Free Third-country duty 1 tariff line 
New Zealand 5% Third-country duty 3 tariff lines Japan 2.3% Third-country duty 1 tariff line 
Taiwan 2% Third-country duty 1 tariff line 
GCC 5% Third-country duty 1 tariff line 
Switzerland Free Third-country duty 1 tariff line 
Norway Free Third-country duty 1 tariff line 
North Macedonia 15% Third-country duty 1 tariff line 
Nigeria 10% Third-country duty 1 tariff line UK lines: 6804.21
- 6804 21 00 20Discs - of synthetic diamonds which are agglomerated with a metal alloy, ceramic alloy or plastic alloy, - having a self-sharpening effect by constant release of the diamonds, - suitable for abrasive cutting of wafers, - whether or not containing a hole in the centre, - whether or not on a support - with a weight of not more than 377 g per piece and - with an external diameter of not more than 206 mm
- 6804 21 00 40Steel wire used for cropping and squaring semiconductors: -coated with diamond grains of 5µm or more, but not more than 55µm -wire diameter 23 µm or more but not more than 350 µm, -having a breaking strength of 11 n or more, but not more than 170 n
- 6804 21 00 50Wheels suitable for grinding, rounding, polishing, aligning or cutting: -composed of metal base and agglomerated synthetic or natural diamonds, -whether or not containing a hole in the centre, -with an external diameter not more than 870 mm, for machines for the manufacture of semiconductor wafers
- 6804 21 00 90Of agglomerated synthetic or natural diamond: other
Binding rulings for similar goods
Decisions of U.S. Customs and Border Protection (CROSS) and HMRC (Advance Tariff Rulings) on goods classified here. A ruling binds only its holder, but shows how the authorities classify similar goods. The descriptions are the authorities’ own, in English.
- N342165 U.S. CBP
The tariff classification of dicing blades from China.
- N317657 U.S. CBP
The tariff classification of abrasive sanding plates from China.
- H277235 U.S. CBP
Revocation of NY 876359; Tariff classification of diamond wire from Italy
- H284143 U.S. CBP
Request for classification of diamond circular saw blades
Legal notes
In the UK Global Tariff, 6804 21 00 50 is one of 4 lines under subheading 6804.21, of agglomerated synthetic or natural diamond.
The third-country duty is free.
Goods from 174 countries can enter the UK at a preferential rate instead of the standard Free; 174 of them pay no duty at all, for example under DCTS Comprehensive or European Union.
In the UK, additional duty of 35% applies on top of the customs duty to goods from Belarus and Russia.
In the 12 months to August 2026, the UK imported diamond grinding wheels (HS 6804.21) worth £26.7m (down 1% on the year before), at an average of £20.86 per kg; China supplied 31%, followed by Italy.
For the same subheading, the EU duty is 1.7%, the Türkiye duty is 1.7%, the US duty is free, the Canada duty is free, the Mexico duty is free, the Brazil duty is 5.4%, the Argentina duty is 5.4%, the Peru duty is free, the New Zealand duty is 5%, the Japan duty is 2.3%, the Taiwan duty is 2%, the GCC duty is 5%, the Switzerland duty is free, the Norway duty is free, the North Macedonia duty is 15% and the Nigeria duty is 10%.
The UK imported goods of subheading 6804.21 worth US$34m in 2024; the largest supplier was China.
Questions and answers
What is the UK import duty for commodity code 6804 21 00 50?
The third-country duty in the UK Global Tariff is free. Preferential rates for goods from agreement countries, anti-dumping duties and VAT are not included.
Which countries get a lower rate on 6804 21 00 50?
174 countries have a preferential rate on this line, 174 of them at 0%, under DCTS Comprehensive, European Union and DCTS Enhanced and other arrangements. The rate applies only to goods that meet the rules of origin of the agreement, with proof of origin. Choose the country of origin on this page to see its rate.
Do anti-dumping or other extra duties apply to 6804 21 00 50?
Additional duty of 35% on goods from Belarus and Russia. These are charged on top of the customs duty.
Where does the UK import these goods from?
For subheading 6804.21 as a whole, the largest supplier in 2024 was China (US$11m), followed by Italy.