Harmonized Tariff Schedule of the United States · HTS code · HS 9025.90
9025.90.06: Parts of thermometers and hygrometers: Hydrometers and similar floating instruments, thermometers: parts and accessories
Parts of thermometers and hygrometers
Not declarable on its own: use one of its 1 subdivisions Data: Harmonized Tariff Schedule of the United States · checked on 24 October 2026
- 9025 Hydrometers and similar floating instruments, thermometers, pyrometers, barometers, hygrometers and psychrometers, recording or not, and any combination of these instruments; parts and accessories thereof:
- 9025.90.06 Parts and accessories
What you pay
Importing into USA
US additional duties of HTS chapter 99 in force on 22 October 2026 are included (Section 301, 232, 338 and 201). IEEPA duties are no longer collected after the Supreme Court ruling of February 2026. Conditional exemptions (US content, end use, metal share) are not computed: check the provision.
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 1
- Additional dutySection 301 — China — technology transfer, IP and innovation (2018 actions and 2024 four-year review) 25%
- Applies to goods from
- China
- In force
- from 24 September 2018
- Legal act
- HTSUS 9903.88.03
Same subheading in other tariffs
9025.90 Hydrometers and similar floating instruments, thermometers: parts and accessories
UK Free Third-country duty 2 tariff lines 
EU Free Third-country duty 1 tariff line 
Türkiye Free – 3.2% Third-country duty 7 tariff lines · average 2.3% 
Canada Free Third-country duty 1 tariff line 
Mexico Free Third-country duty 1 tariff line 
Brazil 16% Third-country duty 2 tariff lines 
Argentina 16% Third-country duty 5 tariff lines 
Peru Free Third-country duty 1 tariff line 
New Zealand Free Third-country duty 1 tariff line 
Japan Free Third-country duty 1 tariff line 
Taiwan Free Third-country duty 1 tariff line 
GCC 5% Third-country duty 2 tariff lines 
Switzerland Free Third-country duty 1 tariff line 
Norway Free Third-country duty 1 tariff line 
North Macedonia Free Third-country duty 1 tariff line 
Nigeria 5% Third-country duty 1 tariff line 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.
- N303254 U.S. CBP
The tariff classification of Moisture Tester Replacement Parts from China
Legal notes
Additional notes
1. For the purposes of subheadings 90153010, 90258040, 90261021, 90261029, 90262020, 90268020, 90271010 and 90321020, the expression ‘electronic’ means instruments and apparatus which incorporate one or more articles of heading 8540, 8541 or 8542 but for the purposes of the foregoing, no account shall be taken of articles of heading 8540, 8541 or 8542 which have solely the function of rectifying current or which are included in the power pack of instruments or apparatus.
2. For the purposes of subheading 90211010, the expression "orthopaedic appliances" means appliances which are specially designed for a particular orthopaedic purpose, in distinction to products that might be used for various purposes (for example, products for overstrained joints, ligaments or tendons caused by sporting activities, type writing, and products which simply alleviate pain in the defective or disabled part of the body, for example, caused by inflammation).
The "orthopaedic appliances" must completely prevent a specific movement of the defective or disabled part of the body (for example, joints, ligaments, tendons) in order to exclude further injuries or bodily deformities or an aggravation of such injuries or deformities, as distinct from other products that cannot prevent specific movements, yet prevent reflex movements (movements carried out subconsciously) through the relative inflexibility of those products due to, for example, flexible splints, pressure pads, non-elastic textile material, restrictions through "Velcro-type" straps.
In the Harmonized Tariff Schedule of the United States, 9025.90.06 is one of 1 line under subheading 9025.90, hydrometers and similar floating instruments, thermometers.
The general duty is free, and quantities are declared in kg.
For the same subheading, the UK duty is free, the EU duty is free, the Türkiye duty is 0%–3.2%, the Canada duty is free, the Mexico duty is free, the Brazil duty is 16%, the Argentina duty is 16%, the Peru duty is free, the New Zealand duty is free, the Japan duty is free, the Taiwan duty is free, the GCC duty is 5%, the Switzerland duty is free, the Norway duty is free, the North Macedonia duty is free and the Nigeria duty is 5%.
The United States imported goods of subheading 9025.90 worth US$146m in 2024; the largest supplier was Mexico, and the United Kingdom ranked 2nd with US$26m.
Questions and answers
What is the USA import duty for HTS code 9025.90.06?
The general duty in the Harmonized Tariff Schedule of the United States is free; the supplementary unit is kg. Preferential rates for goods from agreement countries, anti-dumping duties and VAT are not included.
Where does the United States import these goods from?
For subheading 9025.90 as a whole, the largest supplier in 2024 was Mexico (US$26m), followed by the United Kingdom.