Other — Measuring or checking instruments, appliances and machines, not specified or included elsewhere in this chapter; profile projectors; parts and accessories thereof
Classified under heading 9031 / subheading 9031.90 — chapter 90 of the US Harmonized Tariff Schedule.
General rate applies to goods from countries with normal trade relations. Special rates require a program code (USMCA, GSP, AGOA…). Column 2 applies where normal trade relations do not.
Duty calculator
Estimate the duty owed on an import under HTS 9031.90.91.
Excludes merchandise processing fees, Section 301 duties, antidumping/countervailing duties and freight. Estimates only — not customs advice.
Where this rate sits
Heading 9031 contains 3 tariff lines. The general rate on this line is duty-free.
| Metric | This line | Heading 9031 |
|---|---|---|
| General rate | Free | avg 0% |
| Duty-free lines | yes | 3 of 3 |
| Specific-rate lines | no | 0 |
Classification path
- 9031Measuring or checking instruments, appliances and machines, not specified or included elsewhere in this chapter; profile projectors; parts and accessories thereof
- 9031.90Parts and accessories
- 9031.90.91Other
All 3 tariff lines under heading 9031
Heading overview →| HTS code | Description | General | Col. 2 |
|---|---|---|---|
| 9031.41.00 | For inspecting semiconductor wafers or devices (including integrated circuits) or for inspecting photomasks or reticles used in manufacturing semiconductor devices (including integrated circuits) | Free | 50% |
| 9031.80.80 | Other | Free | 40% |
| 9031.90.91 | Otherthis page | Free | 40% |
Using HTS 9031.90.91 correctly
A ten-digit HTS number has three parts: the four-digit heading, the six-digit international subheading shared by every WTO member, and the two-digit US statistical suffix. 9031.90.91 is a US national line — the same product may carry a different suffix in the EU TARIC or in another country's tariff.
Classification is determined by the General Rules of Interpretation, not by what the product is called on the invoice. If your goods could fall in two headings, GRI 1 sends you to the heading with the most specific description; GRI 3 breaks ties by essential character. A GRI 3(b) mistake is the single most common reason an entry gets reclassified and billed for unpaid duty plus interest.