8431.43—Parts for boring or sinking machinery of subheading 8430.41 or 8430.49General duty rate
Free
Across 5 10-digit lines
Coverage on this page
Up one level: 8431 — Parts suitable for use solely or principally with the machinery of headings 8425 to 8430: (heading)
HTS 8431.43 is a 6-digit subheading of the U.S. Harmonized Tariff Schedule covering Parts for boring or sinking machinery of subheading 8430.41 or 8430.49. 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 5 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 subheading, and 2 AD/CVD orders flag at least one child line.
Pick a line to view full rate detail and compute landed duty
Chapter 99 overlays touching one or more lines under 8431.43
| Code | Authority | Rate |
|---|---|---|
| 9903.81.91 | section_232 | The duty provided in the applicable subheading + a duty of 50% upon the value of the steel content. |
| 9903.81.92 | section_232 | The duty provided in the applicable subheading. |
| 9903.81.98 | section_232 | The duty provided in the applicable subheading + 25% |
| 9903.80.03 | section_232 | The duty provided in the applicable subheading + 25% |
| 9903.81.86 | section_232 | The duty provided in the applicable subheading + 25% |
| 9903.81.84 | section_232 | The duty provided in the applicable subheading + 25% |
Antidumping or countervailing orders covering one or more lines under 8431.43
HTS 8431.43 is a 6-digit subheading of the U.S. Harmonized Tariff Schedule covering Parts for boring or sinking machinery of subheading 8430.41 or 8430.49. It belongs to Chapter 84 and rolls up 5 10-digit statistical lines that brokers actually file at entry.
Every 10-digit line under HTS 8431.43 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.
U.S. Customs requires entries to be filed at the 10-digit statistical level — the broader subheading HTS 8431.43 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.
Yes — 2 AD/CVD orders flag at least one 10-digit line under HTS 8431.43. Whether a specific shipment falls in scope depends on the country of origin and the order's scope determination. See compliance.tandom.ai for full coverage detail.
Tandom guides relevant to this code
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