Code 9031 90 · Heading 9031

Parts and accessories for measuring and control instruments, apparatus and machines, not elsewhere specified

This code covers parts and accessories for instruments, apparatus and machines used for measuring or control. It applies when the item is not covered by one of the specifically named groups, such as balancing machines, test benches or the listed optical and non-optical instruments.

For example

Replacement lens mount for a profile projector

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See the official tariff text

Official tariff text

Parts and accessories for instruments, appliances and machines for measuring and checking, n.e.s.

The path to this code

Every code is reached through these choices, one level at a time.

Step 4 of 4

Step 1 · Section XVIII Optical, photographic, cinematographic, measuring, …
Is the product an optical, photographic, cinematographic, measuring, control, precision, medical or surgical instrument or apparatus; a watch; or a musical instrument?
✓
Step 2 · Chapter 90 Optical, photographic, cinematographic, measuring, … 1 of 3 chapters in section XVIII
Is the product an optical or photographic article, a photographic or cinematographic apparatus, a medical or surgical instrument or apparatus, a measuring or control instrument or apparatus, another precision instrument or apparatus, or a part or accessory for one of these?
✓
Step 3 · Heading 9031 Measuring or checking instruments, appliances and m… 30 of 32 headings under chapter 90
Is it a balancing machine, a test bench, an optical instrument or machine for checking semiconductor wafers, components, patterns or reticles, another optical instrument for measuring or checking electrical quantities, a non-optical measuring or checking instrument, apparatus or machine, or a part or accessory?
✓
Step 4 · Subheading 9031 90 Parts and accessories for instruments, appliances a… 6 of 6 subheadings under heading 9031
Is the item a balancing machine; a test bench for the named engines, generators, pumps or speed-measuring devices; an optical instrument for semiconductor inspection; an optical instrument for measuring electrical quantities; a non-optical measuring or control instrument; or a part or accessory for such measuring and control equipment?

This is the catch-all under 9031: it covers what the sibling codes below do not.

This is the remainder for parts and accessories of measuring and control instruments, apparatus and machines that are not named in the other groups under this heading.

Full 8-digit codes

Pick the description that best matches your product.

1 code below this one

9031 90 00 Parts and accessories for instruments, appliances and machines for measuring and checking, n.e.s. Duty free Save

Compare the sibling codes

Classification decides the rate here: from 0.0% to 2.8%.

9031 10 Machines for balancing mechanical parts 0.0%
9031 20 Test benches for motors, generators, pumps, etc. 2.8%
9031 41 Optical instruments and appliances for inspecting semiconductor wafers or devices or for inspecting photomasks or reticles used in manufacturing semiconductor devices 0.0%
9031 49 Optical instruments, appliances and machines for measuring or checking, not elsewhere specified or included in chapter 90 0.0%
9031 80 Instruments, appliances and machines for measuring or checking, not elsewhere specified in chapter 90 (excl. optical) No rate on file
9031 90 Parts and accessories for instruments, appliances and machines for measuring and checking, n.e.s. you are here 0.0%

Export to Norway

What Norwegian customs charges when goods like these are imported into Norway.

90.31.9000

Parts and accessories

Ordinary duty

Duty free

Goods of EU origin

Duty free You need documentation of EU origin to use this rate.

Norwegian tariff data version 1.5/1.2, last checked Aug. 3, 2026.

Contains data from Norwegian Customs (data.toll.no), licensed under CC BY 4.0, adapted for display.

Export to the United Kingdom

What UK customs charges when goods like these are imported into the UK.

9031 90 00 00

Parts and accessories

Ordinary duty

Duty free

Goods of EU origin

Duty free You need documentation of EU preferential origin to use this rate.

These rates apply in Great Britain. Different rules may apply for goods entering Northern Ireland.

UK tariff data version v4.0.1576, last checked Aug. 3, 2026.

Contains public sector information licensed under the Open Government Licence v3.0.

Source: UK Department for Business and Trade (data.api.trade.gov.uk).

Check the neighbouring codes

The codes just before and after this one, in case a nearby group fits better.

See all 6 codes at this level

Previous code 9031 80

Instruments, appliances and machines for measuring or checking, not e…

you are here 9031 90

Parts and accessories for instruments, appliances and machines for me…

Duty rates shown here are estimates, read from official EU / Danish, Norwegian and UK tariff data for orientation only. Confirm the current rate with SKAT, TARIC, Norwegian Customs or the UK Online Trade Tariff before you file. The rate you pay can also depend on the country of origin. These are base customs duties only: import VAT, excise duties, anti-dumping duties and safeguard or quota measures are not included.