HS Code for Precision Measuring Instruments
The HS Code for precision measuring instruments is 903180. The MFN duty rate for importing to the US is 3.2%.
| HS Code (6-digit) | 903180 |
|---|---|
| US Duty Rate (MFN) | 3.2% |
| EU Duty Rate (MFN) | 2.1% |
| Chapter | 90 |
| Heading | 9031 |
| Last Updated | 2026-05 |
Description
Other measuring or checking instruments
HS Code 9031.80 covers other precision measuring and checking instruments with a US MFN duty rate of 3.2%.
Frequently Asked Questions
What special packaging is required when shipping precision measuring instruments under HTS 903180 to prevent customs delays?
Instruments must be securely packed in protective, shock-absorbent materials like foam or molded plastic inserts within a rigid outer case. Clear documentation, including manuals and calibration certificates, should be externally accessible to facilitate customs inspection without unpacking the sensitive equipment. Improper packaging that risks damage during inspection can lead to holds and appraisal delays.
Do precision measuring instruments under HTS 903180 require an import license or special approval for entry into Brazil?
Yes, imports of these instruments into Brazil often require an Import License (Licença de Importação - LI) processed through the SISCOMEX system, as they are subject to ANATEL certification if they have radiofrequency components. Additionally, the National Institute of Metrology, Quality and Technology (INMETRO) may require specific conformity assessments for measuring devices used in commercial transactions or regulated sectors.
How does the presence of optical components, like lenses or lasers, affect the classification of a measuring instrument under HTS 9031.80?
The inclusion of optical components does not change the classification if the instrument's primary function remains measurement or checking. For example, a coordinate measuring machine (CMM) with a laser scanner is still classified under 9031.80. However, if the optical system forms a separate, identifiable unit with its own function (e.g., a standalone alignment telescope), it may be classified elsewhere, such as in heading 9013 for optical devices.
U.S. Import Restrictions for Precision Measuring Instruments (9031.80)
The import of certain precision measuring instruments under HTS 9031.80 may be restricted or require specific licenses due to national security and anti-terrorism concerns. Items with potential dual-use applications, particularly for missile technology or nuclear proliferation (e.g., specific laser alignment systems, vibration test equipment), are subject to the Export Administration Regulations (EAR) and may require an import license from the Bureau of Industry and Security (BIS). Importers should consult the Commerce Control List (CCL), specifically Categories 2 (Materials Processing) and 3 (Electronics), to determine if their product is controlled. Always verify the Export Control Classification Number (ECCN) and check the BIS denied persons list prior to shipment.
Common Classification Mistakes for Precision Measuring Instruments
A frequent error is misclassifying optical comparators (profile projectors) under HTS 9013 for optical devices, when they are correctly classified here under 9031 as measuring instruments. Another common mistake involves placing data-logging instruments that primarily record measurement data under heading 8471 for computers; if their primary function is measurement, they belong in 9031. Also, ensure instruments designed for physical measurement (e.g., vibration analyzers, 9031) are not confused with medical diagnostic equipment (9018) or automotive test equipment from heading 9029.
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