Key facts
- HS code
- 9031.90
- Covers
- Parts and accessories
- Edition
- HS2022
- Duty rates
- Set by each country’s tariff
Summary
HS code 9031.90 covers parts and accessories. It sits in heading 90.31 (measuring or checking instruments, appliances and machines, not specified or included elsewhere in this Chapter; profile projectors) in chapter 90 (optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; parts and accessories thereof). Other goods of heading 90.31 are classified under 9031.10 (machines for balancing mechanical parts), 9031.20 (test benches), 9031.41 (other optical instruments and appliances, for inspecting semiconductor wafers or devices (including integrated circuits) or for inspecting photomasks or reticles used in manufacturing semiconductor devices (including integrated circuits)), 9031.49 (other optical instruments and appliances, other) or 1 other.
What this code covers
HS code 9031.90 covers parts and accessories.
The legal text of the subheading is “Parts and accessories”, in HS2022.
What it doesn’t cover
Other goods of heading 90.31 are classified under 9031.10 (machines for balancing mechanical parts), 9031.20 (test benches), 9031.41 (other optical instruments and appliances, for inspecting semiconductor wafers or devices (including integrated circuits) or for inspecting photomasks or reticles used in manufacturing semiconductor devices (including integrated circuits)), 9031.49 (other optical instruments and appliances, other) or 1 other.
- 9031.10Machines for balancing mechanical parts
- 9031.20Test benches
- 9031.41Other optical instruments and appliances: For inspecting semiconductor wafers or devices (including integrated circuits) or for inspecting photomasks or reticles used in manufacturing semiconductor devices (including integrated circuits)
- 9031.49Other optical instruments and appliances: Other
- 9031.80Other instruments, appliances and machines
How it is structured
9031.90 is a six-digit subheading. Its first two digits, 90, are the chapter; the first four, 9031, are heading 90.31; the last two, 90, identify the subheading within the heading.
Countries add their own digits after these six for their national tariff lines.
- Subheading 9031.90
- Parts and accessories
In other countries
No national tariff lines under 9031.90 are live on border.bot yet. Tariffs built on the Harmonized System (HS2022) use 9031.90 at six digits and add their own digits after it.
Frequently asked questions
What does HS code 9031.90 cover?
HS code 9031.90 covers parts and accessories.
Which heading and chapter is HS code 9031.90 in?
HS code 9031.90 is in heading 90.31 (measuring or checking instruments, appliances and machines, not specified or included elsewhere in this Chapter; profile projectors) in chapter 90 (optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; parts and accessories thereof).
Where are goods of heading 90.31 classified when 9031.90 doesn’t fit?
Other goods of heading 90.31 are classified under 9031.10 (machines for balancing mechanical parts), 9031.20 (test benches), 9031.41 (other optical instruments and appliances, for inspecting semiconductor wafers or devices (including integrated circuits) or for inspecting photomasks or reticles used in manufacturing semiconductor devices (including integrated circuits)), 9031.49 (other optical instruments and appliances, other) or 1 other.
Sources and updates
The Harmonized System legal text comes from border.bot release 1 (edition HS 2022), imported from a file, and has been live since 13 October 2026.
This page was last updated on 13 October 2026.
Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.