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Home › Chapter 90 › Heading 9031

HS Heading 9031 : Measuring or checking instruments, appliances and machines, not specified or included elsewhere in this chapter; profile projectors; parts and accessories thereof

HEADING DEFINITION & DISAMBIGUATION

HS Heading 9031 encompasses measuring or checking instruments, appliances and machines, not specified or included elsewhere in this chapter; profile projectors; parts and accessories thereof. It classifies 6 6-digit WCO subheadings within Chapter 90 under the Harmonized System [USITC HTS 2026].

Chapter
Heading
9031
Subheadings
6 HS6
Status
Verified 2026

Subheadings Under Heading 9031

HS Code WCO 6-Digit Subheading Description Chapter Operational Package
9031.10 Machines for balancing mechanical parts 90 View 9031.10 Package →
9031.20 Measuring or checking instruments, appliances and machines, not specified or included elsewhere in this chapter; profile projectors; parts and accessories thereof, Test benches 90 View 9031.20 Package →
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) 90 View 9031.41 Package →
9031.49 Other optical instruments and appliances, Other 90 View 9031.49 Package →
9031.80 Other instruments, appliances and machines 90 View 9031.80 Package →
9031.90 Parts and accessories 90 View 9031.90 Package →
DISAMBIGUATION & CLASSIFICATION GUIDE

How to Select the Correct Subheading Under Heading 9031

Commercial shipments must be declared under the exact 6-digit WCO subheading that matches physical, chemical, or processing characteristics. Review the subheading descriptions above and verify against binding CBP CROSS rulings prior to entry filing.

Official Primary Sources & Authority References

USITC HTS Heading 9031 ↗

United States International Trade Commission official Harmonized Tariff Schedule.

CBP CROSS Rulings ↗

CBP e-Rulings database for Heading 9031 precedent rulings.

WCO Nomenclature ↗

World Customs Organization Harmonized System 2022 nomenclature standard.

U.S. Census Foreign Trade ↗

U.S. Census Bureau HTS-to-NAICS concordance and Schedule B export database.

Heading 9031 Frequently Asked Questions (FAQ)

What commercial articles are grouped under HS Heading 9031?
HS Heading 9031 covers Measuring or checking instruments, appliances and machines, not specified or included elsewhere in this chapter; profile projectors; parts and accessories thereof, grouping 6 6-digit WCO subheadings.
How are 6-digit subheadings structured under Heading 9031?
Subheadings under Heading 9031 range from 9031.11 to 9031.90, classifying goods by processing state, origin, or material composition.
What is the representative US import duty rate for Heading 9031?
US MFN general duty rates for Heading 9031 commodities range from Duty-Free up to representative ad valorem percentages under the 2026 US HTS.
Are Section 301 tariffs applicable to goods under Heading 9031?
Section 301 additional tariffs depend on the specific 8-digit or 10-digit US HTS code and country of origin (e.g. China Lists 1–4A).
What PGA message set flags apply to Heading 9031?
Partner Government Agency flags (FDA, USDA APHIS, EPA) apply depending on the specific commodity sub-classification.
How do I distinguish between subheadings under Heading 9031?
Review WCO subheading terms and candidate descriptions. For example, unroasted vs. roasted or decaffeinated vs. non-decaffeinated.
Can goods under Heading 9031 enter duty-free under USMCA?
Yes. Goods originating in USMCA territories (US, Mexico, Canada) enter duty-free under SPI code P with a valid Certificate of Origin.
What is the Section 321 de minimis limit for Heading 9031?
Eligible import shipments valued at $800 USD or less imported by one person on one day enter duty-free under 19 U.S.C. 1321.
What documents are required for formal customs entry of Heading 9031?
Commercial Invoice, Packing List, Bill of Lading, and CBP Form 7501 are mandatory for entries exceeding $2,500 USD.
How can an importer get a binding CBP classification ruling for Heading 9031?
Importers may apply for a binding ruling via CBP National Commodity Specialist Division under 19 CFR Part 177.