9031.90.91.95—Measuring or checking instruments, appliances and machines, not specified or included elsewhere in this chapter; profile projectors; parts and accessories thereof, parts and accessories, other
General
Free
Units
kg
Column 2
40%
Special
—
Plain-English explanation
HTS 9031.90.91.95 is the U.S. Harmonized Tariff Schedule classification for Measuring or checking instruments, appliances and machines, not specified or included elsewhere in this chapter; profile projectors; parts and accessories thereof, parts and accessories, other. It's a 10-digit statistical line in Chapter 90: Optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; parts and accessories thereof, Section XVIII: Optical, Photographic, Cinematographic, Measuring, Checking, Precision, Medical or Surgical Instruments and Apparatus; Clocks and Watches; Musical Instruments; Parts and Accessories Thereof, used by U.S. Customs and Border Protection to determine the duty rate at entry. 6 Chapter 99 tariff modifications currently stack on top of the base rate, and 18 active AD/CVD orders flag this code.
New to HTS codes? Read our guide on how HTS classification works →
Tariff modifications(6)
Chapter 99 overlays that stack on the base rate
| Code | Authority | Rate |
|---|---|---|
| 9903.85.01 | section_232 | The duty provided in the applicable subheading + 10% |
| 9903.85.08 | section_232 | The duty provided in the applicable subheading + a duty of 50% upon the value of the aluminum content. |
| 9903.85.09 | section_232 | The duty provided in the applicable subheading. |
| 9903.85.15 | section_232 | The duty provided in the applicable subheading + a duty of 25% upon the value of the aluminum content |
| 9903.85.68 | section_232 | The duty provided in the applicable subheading + 200% |
| 9903.85.70 | section_232 | The duty provided in the applicable subheading + 200% |
Potentially applicable AD/CVD orders(18)
Active orders that may apply to imports under this HTS code. HTS coverage is advisory — actual scope depends on each order's product description. Run the AD/CVD lookup → to check whether your specific shipment is in scope.
Aluminum Extrusions
Aluminum Extrusions
Aluminum Extrusions
Aluminum Extrusions
Aluminum Extrusions
Aluminum Extrusions
Aluminum Extrusions
Aluminum Extrusions
Aluminum Extrusions from China (2024 Investigation)
Aluminum Extrusions
Aluminum Extrusions
Aluminum Extrusions
Aluminum Extrusions
Aluminum Extrusions
Aluminum Extrusions
Aluminum Extrusions
Aluminum Extrusions
Aluminum Extrusions
Recent CBP rulings(5)
Past CBP decisions classifying real products under this HTS code. Useful precedent when classifying a similar product — each ruling shows how CBP interpreted the code for a specific case.
The tariff classification of a digital torpedo level body from China
The tariff classification of Whoop Bands from China
The tariff classification and marking determination of a Smart Dog Collar from China
The tariff classification of the E-Val Pro EVP and Sensor Arrays from Denmark
The tariff classification of Trident DM4500 Wear Debris Monitor parts from China
Source: CBP CROSS (view all rulings on rulings.cbp.gov →)
Frequently asked questions
What is HTS code 9031.90.91.95?
HTS 9031.90.91.95 is the U.S. Harmonized Tariff Schedule classification for Measuring or checking instruments, appliances and machines, not specified or included elsewhere in this chapter; profile projectors; parts and accessories thereof, parts and accessories, other. It belongs to Chapter 90 of the HTSUS.
What is the general duty rate for HTS 9031.90.91.95?
The general (Column 1) duty rate for HTS 9031.90.91.95 is Free. This is the most-favored-nation (MFN) rate that applies to imports from World Trade Organization member countries.
What is the Column 2 (statutory) rate for HTS 9031.90.91.95?
The Column 2 rate for HTS 9031.90.91.95 is 40%. This rate applies to imports from countries that do not have normal trade relations with the United States (currently Cuba and North Korea).
Are there Section 301 or Section 232 tariffs on HTS 9031.90.91.95?
Yes — HTS 9031.90.91.95 is covered by section_232 provision 9903.85.01 (The duty provided in the applicable subheading + 10%). 5 additional overlays also touch this code. Open the code page for the full overlay stack with effective dates and country scopes.
Does HTS 9031.90.91.95 have any antidumping or countervailing duty (AD/CVD) orders?
Yes — 18 AD/CVD orders flag this code: A-549-847 (AD, Thailand), A-475-846 (AD, Italy), A-301-806 (AD, Colombia) plus 15 more. Open the code page for deposit rates, scope determinations, and the linked case lookups.
Learn more
Tandom guides relevant to this code
Section 232 steel, aluminum, and copper duties in 2026
What changed April 6, 2026, what stayed the same, and how to file a steel, aluminum, or copper line in ACE without leaving duty exposure on the table.
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How Chapter 99 tariff layers stack on a single entry
How to read, order, and report Chapter 99 HTS codes alongside the base classification on a US entry summary in 2026. The full stacking ladder for brokers and compliance teams.
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How to calculate US import duties
A working guide to the inputs, the layers, and the math behind a US entry summary in 2026. Written for brokers, forwarders, and importer compliance teams.
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Trade compliance APIs in broker workflows
Where trade compliance APIs fit in a broker's filing pipeline: HTS classification, duty calculation, AD/CVD scope match, and post-summary corrections.
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Wire the Tandom Duty Calculator API into a TMS or broker software
Drop the Tandom Duty Calculator API into a TMS, broker software, or in-house ERP. Code samples, the response shape, and ACE reporting order, in 2026.
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Section 301 China tariff exclusions in 2026
What the 178 active Section 301 exclusions cover, how to claim 9903.88.69 on an entry, and what changes when the November 10, 2026 deadline passes.
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