8431.43.80—Parts for boring or sinking machinery of subheading 8430.41 or 8430.49, other
General duty rate
Free
Across 4 10-digit lines
Coverage on this page
Up one level: 8431.43 — Parts for boring or sinking machinery of subheading 8430.41 or 8430.49: (subheading)
Plain-English explanation
HTS 8431.43.80 is an 8-digit tariff item of the U.S. Harmonized Tariff Schedule covering Parts for boring or sinking machinery of subheading 8430.41 or 8430.49, other. It sits in Chapter 84: Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof, Section XVI: Machinery and Mechanical Appliances; Electrical Equipment; Parts Thereof; Sound Recorders and Reproducers, Television Image and Sound Recorders and Reproducers, and Parts and Accessories of Such Articles and rolls up 4 10-digit statistical lines, all with a general duty rate of Free. 13 Chapter 99 tariff modifications currently touch one or more lines under this tariff item, and 2 AD/CVD orders flag at least one child line.
10-digit lines under 8431.43.80(4)
Pick a line to view full rate detail and compute landed duty
Tariff modifications(13)
Chapter 99 overlays touching one or more lines under 8431.43.80
| Code | Authority | Rate |
|---|---|---|
| 9903.82.05 | section_232 | 15% |
| 9903.82.13 | section_232 | 0% |
| 9903.81.91 | section_232 | The duty provided in the applicable subheading + a duty of 50% upon the value of the steel content. |
| 9903.82.15 |
AD/CVD orders(2)
Antidumping or countervailing orders covering one or more lines under 8431.43.80
Frequently asked questions
What does HTS 8431.43.80 cover?
HTS 8431.43.80 is an 8-digit tariff item of the U.S. Harmonized Tariff Schedule covering Parts for boring or sinking machinery of subheading 8430.41 or 8430.49, other. It belongs to Chapter 84 and rolls up 4 10-digit statistical lines that brokers actually file at entry.
What is the duty rate for HTS 8431.43.80?
Every 10-digit line under HTS 8431.43.80 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 8431.43.80?
U.S. Customs requires entries to be filed at the 10-digit statistical level — the broader tariff item HTS 8431.43.80 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 8431.43.80?
Learn more
Tandom guides relevant to this code
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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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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