UK Global Tariff · commodity code · HS 8483.40
8483 40 25 20: Worm gearbox -in an aluminium alloy housing, -with a plastic or steel worm, -with mounting holes, -with a 90 degree reversible drive direction, -with a 4:19 transmission ratio, -equipped with a lead screw with a length of 310 mm or more but not more than 380 mm, -with a guide nut incorporated into the assembly bracket, -with or without a lead screw support, for indirect connection to the drive motor of a car seat guide system
Gears and gearboxes (machinery)
✓ Can be used in a customs declaration Data: UK Global Tariff · checked on 24 October 2026
- 8483 Transmission shafts (including cam shafts and crank shafts) and cranks; bearing housings and plain shaft bearings; gears and gearing; ball or roller screws; gear boxes and other speed changers, including torque converters; flywheels and pulleys, including pulley blocks; clutches and shaft couplings (including universal joints)
- 8483 40 00 00 Gears and gearing, other than toothed wheels, chain sprockets and other transmission elements presented separately; ball or roller screws; gear boxes and other speed changers, including torque converters
- Gears and gearing (other than friction gears)
- 8483 40 25 00 Worm gear
- 8483 40 25 20 Worm gearbox -in an aluminium alloy housing, -with a plastic or steel worm, -with mounting holes, -with a 90 degree reversible drive direction, -with a 4:19 transmission ratio, -equipped with a lead screw with a length of 310 mm or more but not more than 380 mm, -with a guide nut incorporated into the assembly bracket, -with or without a lead screw support, for indirect connection to the drive motor of a car seat guide system
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. 376
- Documents
- 9008
- Duty suspensionAirworthiness tariff suspension Free
- Applies to goods from
- all countries
- Legal act
- S.I. 2018/1249
- Documents
- C119 Authorised Release Certificate — EASA Form 1 (Appendix I to Annex I to Regulation (EU) No 748/2012), or equivalent certificate
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
- Russia, Ukraine
- Legal act
- 2023 No. 440, S.I. 2022/395
- Documents
- 9011
- 9022
- 9038
- 9009
- 9010
- 9017
- Import controlImport control on restricted goods and technologies
- Applies to goods from
- North Korea
- Legal act
- S.I. 2019/411
- Documents
- Y920 Goods other than those described in the footnotes linked to the measure
- Import controlImport control on luxury goods
- Applies to goods from
- North Korea
- Legal act
- S.I. 2019/411
- Documents
- Y945 Travellers' personal effects or goods of a non-commercial nature for travellers' personal use contained in their luggage (Art 10.2 of Regulation (EU) 2017/1509)
- Y946 Goods necessary for the official purposes of diplomatic or consular missions of Member States in the DPRK or international organisations enjoying immunities in accordance with international law, or to the personal effects of their staff (Art 10.3 of Regulation (EU) 2017/1509)
- Y948 Goods other than those described in Annex VIII (Luxury goods) of Reg. (EU) 2017/1509
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…
TN211 The Russia (Sanctions) (EU Exit) Regulations 2019 impose trade restrictions on certain goo…
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
TN702 According to the Council Regulation (EU) No 1351/2014 (OJ L365, p. 46), the export of good…
(a) to any natural or legal person, entity or body in Crimea or Sevastopol, or
(b) for use in Crimea or Sevastopol.
The prohibitions shall be without prejudice to the execution until 21 March 2015 of an obligation arising from a contract concluded before 20 December 2014, or by ancillary contracts necessary for the execution of such contracts, provided that the competent authority has been informed at least five working days in advance.
When related to the use in Crimea or Sevastopol, the prohibitions do not apply where there are no reasonable grounds to determine that the goods and technology or the services are to be used in Crimea or Sevastopol.
UK: imports by month · HS 8483.40
Main suppliers, last 12 months
| Country | Value | Share | Change |
|---|---|---|---|
 Germany | £95.4m | 21% | -20% |
 Italy | £95.2m | 20.9% | +36.5% |
 United States | £39.9m | 8.8% | +9.6% |
| United Kingdom | £29.8m | 6.5% | +30.7% |
 India | £27.8m | 6.1% | +60.6% |
 Poland | £24.2m | 5.3% | +0% |
 France | £21.6m | 4.8% | -20.3% |
 Hungary | £20m | 4.4% | -11.1% |
Same subheading in other tariffs
EU 3.7% Third-country duty 8 tariff lines 
Türkiye Free – 3.7% Third-country duty 18 tariff lines · average 2.1% USA Free – 3.8% General (MFN) 6 tariff lines · average 1.8% · 1× specific or compound duty 
Canada Free Third-country duty 7 tariff lines 
Mexico Free Third-country duty 8 tariff lines 
Brazil 12.6% Third-country duty 2 tariff lines 
Argentina 12.6% Third-country duty 9 tariff lines 
Peru Free Third-country duty 4 tariff lines 
New Zealand Free – 5% Third-country duty 6 tariff lines · average 3% · 1× specific or compound duty 
Japan Free Third-country duty 2 tariff lines 
Taiwan 2.5% – 10% Third-country duty 5 tariff lines · average 5.4% 
GCC 5% Third-country duty 7 tariff lines 
Switzerland Free Third-country duty 1 tariff line 
Norway Free Third-country duty 2 tariff lines 
North Macedonia 3.7% – 8% Third-country duty 8 tariff lines · average 6.1% 
Nigeria 10% Third-country duty 1 tariff line UK lines: 8483.40
- 8483 40 21 10For use in civil aircraft
- 8483 40 21 90Gears and gearing (other than friction gears): spur and helical, other
- 8483 40 23 10For use in civil aircraft
- 8483 40 23 20Bevel gear: -made of lightweight alloys and steel, -built on straight or helical bevel gears, -with an angle between the shafts of 30 degrees or more but not more than 90 degrees -with a gear 1:1.3 ratio or more but not more than 1:1.46, for use in the manufacture of grass trimmers, brushcutters and other types of garden machinery
- 8483 40 23 30Bevel gear: -made of lightweight alloys and steel, -built on straight bevel gears, -with an angle between the shafts of 24 degrees or more but not more than 35 degrees, for use in the manufacture of grass trimmers, brushcutters and other types of garden machinery
- 8483 40 23 90Gears and gearing (other than friction gears): bevel and bevel/spur, other
- 8483 40 25 10For use in civil aircraft
- 8483 40 25 20Worm gearbox -in an aluminium alloy housing, -with a plastic or steel worm, -with mounting holes, -with a 90 degree reversible drive direction, -with a 4:19 transmission ratio, -equipped with a lead screw with a length of 310 mm or more but not more than 380 mm, -with a guide nut incorporated into the assembly bracket, -with or without a lead screw support, for indirect connection to the drive motor of a car seat guide system
- 8483 40 25 90Gears and gearing (other than friction gears): worm gear, other
- 8483 40 29 10For use in civil aircraft
- 8483 40 29 50Gear set of cycloid gear type with: - a rated torque of 50 nm or more but not more than 9 000 nm, - standard ratios of 1:50 or more but not more than 1:475, - lost motion of not more than one arc minute, - an efficiency of more than 80% of a kind used in robot arms
- 8483 40 29 60Epicyclic gearing, of a kind used in driving hand-held power tools with: - a rated torque of 25 nm or more, but not more than 70 nm, - standard gear ratios of 1:12.7 or more, but not more than 1:65.3
- 8483 40 29 70Cast steel planetary cage, with: -external or internal toothing in a diametral pitch standard, -27 teeth or more, but not more than 70 teeth, -a diameter of 300 mm or more, but not more than 725 mm, -a length of 225 mm or more, but not more than 800 mm, -3 or 4 planetary gears, -a hardness of 40 hrc or more, but not more than 45 hrc
- 8483 40 29 89Gears and gearing (other than friction gears): other, other, other
- 8483 40 30 10For use in civil aircraft
- 8483 40 30 90Ball or roller screws: other
- 8483 40 51 10For use in civil aircraft
- 8483 40 51 90Gear boxes and other speed changers: gear boxes, other
- 8483 40 59 10For use in civil aircraft
- 8483 40 59 30Hydrostatic speed changer: -with a hydro pump and a differential with wheel axle, -whether or not with a fan impeller and/or a pulley, for use in the manufacture of lawn mowers of subheadings 8433 11 and 8433 19 or other mowers of subheading 8433 20
- 8483 40 59 90Gear boxes and other speed changers: other, other
- 8483 40 90 10For use in civil aircraft
- 8483 40 90 80Transmission gearbox, with: - not more than 3 gears, - an automatic deceleration system and - a power reversal system, for use in the manufacture of goods of heading 8427
- 8483 40 90 99Gears and gearing, other than toothed wheels, chain: other, 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.
- N361005 U.S. CBP
The tariff classification and country of origin of a harmonic planetary reducer
- N355530 U.S. CBP
The tariff classification of a gearbox from Japan
- N348906 U.S. CBP
The classification and country of origin of worm gear operators
- N349379 U.S. CBP
The classification and country of origin of worm gear operators
- 600015015 HMRC
The product is driven by a hydraulic or electric motor (not part of assembly), can be used in i forklift truck, winch drives, and a wide range of rotating machinery. Made from cast iron and steel housing and certain internal components/alloy steel case hardened internal gears and bearing/rubber…
- 600013530 HMRC
A Gearbox assembly. The assembly is made from multiple components including a torque synchro servomotor, a control transformer synchro and a set of reduction gears in a stainless steel housing. Stainless steel fixings (screws, washers etc), wiring, electrical connectors and synchro motors are also…
- 600010192 HMRC
The Directing Gear is a part the Synchronous Drive used with Sonar Type 2008; An underwater telephone fitted to both surface and submarine vessels. Directing Gear (DG) is an assembly comprising: a gearbox, which mechanically couples the gearbox motor to various synchros and the main shaft. The…
13 rulings in total for this code
Legal notes
In the UK Global Tariff, 8483 40 25 20 is one of 24 lines under subheading 8483.40, gears and gearing.
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 gears and gearboxes (machinery) (HS 8483.40) worth £454.6m (up 3% on the year before), at an average of £20.51 per kg; Germany supplied 21%, followed by Italy.
For the same subheading, the EU duty is 3.7%, the Türkiye duty is 0%–3.7%, the US duty is 0%–3.8%, the Canada duty is free, the Mexico duty is free, the Brazil duty is 12.6%, the Argentina duty is 12.6%, the Peru duty is free, the New Zealand duty is 0%–5%, the Japan duty is free, the Taiwan duty is 2.5%–10%, the GCC duty is 5%, the Switzerland duty is free, the Norway duty is free, the North Macedonia duty is 3.7%–8% and the Nigeria duty is 10%.
The UK imported goods of subheading 8483.40 worth US$542m in 2024; the largest supplier was Germany.
Questions and answers
What is the UK import duty for commodity code 8483 40 25 20?
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 8483 40 25 20?
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 8483 40 25 20?
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 8483.40 as a whole, the largest supplier in 2024 was Germany (US$143m), followed by Italy.
Typical products
- ballscrews
- bevel gears
- friction cone couplings
- friction disc couplings
- friction gears
- gear boxes
- gears other than toothed wheels
- helical gears
- spur gears
- torque converters
- variable speed fluid couplings
- worm gear
Everyday names, not part of the legal text.