9031.90.91—Parts and accessories, other
General duty rate
Free
Across 3 10-digit lines
Coverage on this page
Up one level: 9031.90 — Parts and accessories: (subheading)
Plain-English explanation
HTS 9031.90.91 is an 8-digit tariff item of the U.S. Harmonized Tariff Schedule covering Parts and accessories, other. It sits 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 and rolls up 3 10-digit statistical lines, all with a general duty rate of Free. 6 Chapter 99 tariff modifications currently touch one or more lines under this tariff item, and 18 AD/CVD orders flag at least one child line.
10-digit lines under 9031.90.91(3)
Pick a line to view full rate detail and compute landed duty
Tariff modifications(6)
Chapter 99 overlays touching one or more lines under 9031.90.91
| Code | Authority | Rate |
|---|---|---|
| 9903.85.08 | section_232 | The duty provided in the applicable subheading + a duty of 50% upon the value of the aluminum content. |
| 9903.85.15 | section_232 | The duty provided in the applicable subheading + a duty of 25% upon the value of the aluminum content |
| 9903.85.09 | section_232 | The duty provided in the applicable subheading. |
AD/CVD orders(18)
Antidumping or countervailing orders covering one or more lines under 9031.90.91
Frequently asked questions
What does HTS 9031.90.91 cover?
HTS 9031.90.91 is an 8-digit tariff item of the U.S. Harmonized Tariff Schedule covering Parts and accessories, other. It belongs to Chapter 90 and rolls up 3 10-digit statistical lines that brokers actually file at entry.
What is the duty rate for HTS 9031.90.91?
Every 10-digit line under HTS 9031.90.91 carries a general (Column 1) duty rate of Free. Section 301, Section 232, and AD/CVD overlays may stack on top of this rate at the per-line level — open a specific 10-digit code to see its complete tariff stack.
How do I find the right 10-digit line under HTS 9031.90.91?
U.S. Customs requires entries to be filed at the 10-digit statistical level — the broader tariff item HTS 9031.90.91 is not directly fileable. Match your product description to the most specific 10-digit line in the list on this page; if multiple lines could apply, the General Rules of Interpretation (GRIs) and chapter notes determine which one governs.
Are there AD/CVD orders affecting HTS 9031.90.91?
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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