Chapter 90: Optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; parts and accessories thereof
HTS heading 9031: Measuring or checking instruments, appliances and machines, not specified or included elsewhere in this chapter; profile projectors; parts…
28 numbered lines under heading 9031, including 21 10-digit statistical lines. The first six digits are the international HS subheading; the general column is the normal US duty rate.
| HTS code | Description | Unit | General | Special | Column 2 |
|---|---|---|---|---|---|
| 9031 | Measuring or checking instruments, appliances and machines, not specified or included elsewhere in this chapter; profile projectors; parts and accessories thereof: | ||||
| 9031.10.00.00 | Machines for balancing mechanical parts | No. | Free | 40% | |
| 9031.20.00.00 | Test benches | No. | 1.7% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 45% |
| Other optical instruments and appliances: | |||||
| 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% | ||
| 9031.41.00.20 | For inspecting photomasks or reticles used in manufacturing semiconductor devices | No. | |||
| For inspecting semiconductor wafers or devices: | |||||
| 9031.41.00.40 | For wafers | No. | |||
| 9031.41.00.60 | Other | No. | |||
| 9031.49 | Other: | ||||
| 9031.49.10.00 | Profile projectors | No. | Free | 45% | |
| 9031.49.40.00 | Coordinate-measuring machines | No. | Free | 50% | |
| 9031.49.70.00 | For inspecting masks (other than photomasks) used in manufacturing semiconductor devices; for measuring surface particulate contamination on semiconductor devices | No. | Free | 50% | |
| 9031.49.90.00 | Other | No. | Free | 50% | |
| 9031.80 | Other instruments, appliances and machines: | ||||
| 9031.80.40.00 | Electron beam microscopes fitted with equipment specifically designed for the handling and transport of semiconductor wafers or reticles | No. | Free | 40% | |
| 9031.80.80 | OtherNote: See 9817.84.01. | Free | 40% | ||
| Equipment for testing the characteristics of internal combustion engines: | |||||
| 9031.80.80.60 | For testing electrical characteristics | kg | |||
| 9031.80.80.70 | Other | kg | |||
| 9031.80.80.85 | Other | kg | |||
| 9031.90 | Parts and accessories: | ||||
| 9031.90.21.00 | Of profile projectors | kg | Free | 45% | |
| Of other optical instruments and appliances, other than test benches: | |||||
| 9031.90.45.00 | Bases and frames for the coordinate-measuring machines of subheading 9031.49.40 | kg | Free | 50% | |
| 9031.90.54.00 | Of optical instruments and appliances of subheading 9031.41 or 9031.49.70 | kg | Free | 50% | |
| 9031.90.59.00 | Other | kg | Free | 50% | |
| Other: | |||||
| 9031.90.70.00 | Of articles of subheading 9031.80.40 | kg | Free | 40% | |
| 9031.90.91 | OtherNote: See U.S. note 19 to subchapter III, chapter 99. | Free | 40% | ||
| 9031.90.91.30 | Of machines for balancing mechanical parts | kg | |||
| 9031.90.91.60 | Of test benches | kg | |||
| 9031.90.91.95 | Other | kg |
Statistical (10-digit) lines without a rate use the rate of the 8-digit line above them. Additional duties such as Section 301 and Section 232 may apply; check them with the tariff checker.
Free tools
Free customs and shipping tools
HTS Code Lookup
Search the full US Harmonized Tariff Schedule by product or code, with duty rates.
De Minimis & Tariff Checker
US de minimis status and the Section 301/232 tariffs that may apply to an import.
Landed Cost & Duty Calculator
Estimate import duties, taxes and fees so you can price DDP.
Commercial Invoice Generator
Make a customs-ready commercial invoice with HS codes, plus CN 22/CN 23-style declarations.
Want us to find the money leaking out of your shipping? Get a free profit-leak audit.
Request a free auditSource: Harmonized Tariff Schedule of the United States, 2026 HTS Revision 20 (effective 2026-09-28), U.S. International Trade Commission (hts.usitc.gov), imported 2026-10-07. Reference only; not legal or customs advice or a binding classification. Additional duties under Chapter 99 may apply. ShipWave is not affiliated with the USITC or U.S. Customs and Border Protection.