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HTS Code · Chapter 84 · Updated Oct 26, 2026

8431.39.00.50Parts suitable for use solely or…, of oil and gas field machinery

Also written 8431390050 and 8431.39.0050

HTS Code 8431.39.00.50 covers any article best defined as 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 ArticlesNuclear reactors, boilers, machinery and mechanical appliances; parts thereofParts suitable for use solely or principally with the machinery of headings 8425 to 8430:Of machinery of heading 8428:OtherOther:Of oil and gas field machinery in the Harmonized Tariff Schedule.

As of Oct 26, 2026, US imports of parts suitable for use solely or…, of oil and gas field machinery (HTS 8431.39.00.50) from China pay 37.5% in duties: a duty-free base rate plus Section 301 – China (25%) and Section 301 – Forced Labor (12.5%).

From China, the total duty on 8431.39.00.50 last changed on Jul 24, 2026, from 35% to 37.5%. It has changed 2 times since Nov 17, 2025.

Estimated Duty on 8431.39.00.50

$10,000.00 by ocean, entered Oct 26, 2026

China
Total duty
37.5%
$3,750.00 on this shipment
Fees
0.47%
MPF + HMF · $47.14
Duty + fees
37.97%
Payable to CBP
Landed cost
$13,797.14
On $10,000.00 customs value
  • Section 301 – China25%
  • Section 301 – Forced Labor12.5%
  • Customs fees0.47%

Chapter 99 lines9903.88.01Section 301 China: List 19903.05.31Section 301 Forced Labor – China

8 exemptions could lower this

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Base Duty Rates for 8431.39.00.50

Set at 8431.39.00 in the Harmonized Tariff Schedule

General Rate of Duty
Free
Special Rate of Duty
—
Column 2 (Non-NTR)
35%
Units of Quantity
No.
Total duty by countryAll 20 →
  • China37.5%
  • Mexico10%
  • Canada10%
  • Vietnam12.5%
  • Germany10%

Tariff updates

Recent US tariff actions that name 8431.39.00.50 or its heading.

All tariff updates
Tariffs by country · Oct 26, 2026

US Import Duty on HTS 8431.39.00.50 by Country of Origin

As of Oct 26, 2026, US imports of parts suitable for use solely or…, of oil and gas field machinery (HTS 8431.39.00.50) from China pay 37.5% in duties: a duty-free base rate plus Section 301 – China (25%) and Section 301 – Forced Labor (12.5%). Of the 20 largest sources of US imports, the lowest total is 10%, from Mexico, Canada and 11 more.

Total duty from China
37.5%
Base rate plus 2 additional tariffs
Lowest total duty
10%
From Mexico, Canada and 11 more
Countries with additional tariffs
20 of 20
Section 232, 301 and other Chapter 99 duties
Country of originBase rateAdditional tariffsTotal duty
ChinaFree37.5%
MexicoFree10%0% with USMCA
CanadaFree10%0% with USMCA
VietnamFree12.5%
GermanyFree10%
JapanFree12.5%
South KoreaFree12.5%
TaiwanFree10%
IndiaFree10%
IrelandFree10%
ItalyFree10%
SwitzerlandFree12.5%
ThailandFree12.5%
MalaysiaFree10%
United KingdomFree10%
FranceFree10%
IndonesiaFree10%
BrazilFree37.5%
BangladeshFree10%
CambodiaFree10%
Duty from each country, in words
  • As of Oct 26, 2026, US imports of parts suitable for use solely or…, of oil and gas field machinery (HTS 8431.39.00.50) from China pay 37.5% in duties: a duty-free base rate plus Section 301 – China (25%) and Section 301 – Forced Labor (12.5%).
  • As of Oct 26, 2026, US imports of parts suitable for use solely or…, of oil and gas field machinery (HTS 8431.39.00.50) from Mexico pay 10% in duties: a duty-free base rate plus Section 301 – Forced Labor (10%). With USMCA, qualifying goods pay 0%.
  • As of Oct 26, 2026, US imports of parts suitable for use solely or…, of oil and gas field machinery (HTS 8431.39.00.50) from Canada pay 10% in duties: a duty-free base rate plus Section 301 – Forced Labor (10%). With USMCA, qualifying goods pay 0%.
  • As of Oct 26, 2026, US imports of parts suitable for use solely or…, of oil and gas field machinery (HTS 8431.39.00.50) from Vietnam pay 12.5% in duties: a duty-free base rate plus Section 301 – Forced Labor (12.5%).
  • As of Oct 26, 2026, US imports of parts suitable for use solely or…, of oil and gas field machinery (HTS 8431.39.00.50) from Germany pay 10% in duties: a duty-free base rate plus Section 301 – Forced Labor (10%).
  • As of Oct 26, 2026, US imports of parts suitable for use solely or…, of oil and gas field machinery (HTS 8431.39.00.50) from Japan pay 12.5% in duties: a duty-free base rate plus Section 301 – Forced Labor (12.5%).
  • As of Oct 26, 2026, US imports of parts suitable for use solely or…, of oil and gas field machinery (HTS 8431.39.00.50) from South Korea pay 12.5% in duties: a duty-free base rate plus Section 301 – Forced Labor (12.5%).
  • As of Oct 26, 2026, US imports of parts suitable for use solely or…, of oil and gas field machinery (HTS 8431.39.00.50) from Taiwan pay 10% in duties: a duty-free base rate plus Section 301 – Forced Labor (10%).
  • As of Oct 26, 2026, US imports of parts suitable for use solely or…, of oil and gas field machinery (HTS 8431.39.00.50) from India pay 10% in duties: a duty-free base rate plus Section 301 – Forced Labor (10%).
  • As of Oct 26, 2026, US imports of parts suitable for use solely or…, of oil and gas field machinery (HTS 8431.39.00.50) from Ireland pay 10% in duties: a duty-free base rate plus Section 301 – Forced Labor (10%).
  • As of Oct 26, 2026, US imports of parts suitable for use solely or…, of oil and gas field machinery (HTS 8431.39.00.50) from Italy pay 10% in duties: a duty-free base rate plus Section 301 – Forced Labor (10%).
  • As of Oct 26, 2026, US imports of parts suitable for use solely or…, of oil and gas field machinery (HTS 8431.39.00.50) from Switzerland pay 12.5% in duties: a duty-free base rate plus Section 301 – Forced Labor (12.5%).
  • As of Oct 26, 2026, US imports of parts suitable for use solely or…, of oil and gas field machinery (HTS 8431.39.00.50) from Thailand pay 12.5% in duties: a duty-free base rate plus Section 301 – Forced Labor (12.5%).
  • As of Oct 26, 2026, US imports of parts suitable for use solely or…, of oil and gas field machinery (HTS 8431.39.00.50) from Malaysia pay 10% in duties: a duty-free base rate plus Section 301 – Forced Labor (10%).
  • As of Oct 26, 2026, US imports of parts suitable for use solely or…, of oil and gas field machinery (HTS 8431.39.00.50) from United Kingdom pay 10% in duties: a duty-free base rate plus Section 301 – Forced Labor (10%).
  • As of Oct 26, 2026, US imports of parts suitable for use solely or…, of oil and gas field machinery (HTS 8431.39.00.50) from France pay 10% in duties: a duty-free base rate plus Section 301 – Forced Labor (10%).
  • As of Oct 26, 2026, US imports of parts suitable for use solely or…, of oil and gas field machinery (HTS 8431.39.00.50) from Indonesia pay 10% in duties: a duty-free base rate plus Section 301 – Forced Labor (10%).
  • As of Oct 26, 2026, US imports of parts suitable for use solely or…, of oil and gas field machinery (HTS 8431.39.00.50) from Brazil pay 37.5% in duties: a duty-free base rate plus Section 301 – Brazil (25%) and Section 301 – Forced Labor (12.5%).
  • As of Oct 26, 2026, US imports of parts suitable for use solely or…, of oil and gas field machinery (HTS 8431.39.00.50) from Bangladesh pay 10% in duties: a duty-free base rate plus Section 301 – Forced Labor (10%).
  • As of Oct 26, 2026, US imports of parts suitable for use solely or…, of oil and gas field machinery (HTS 8431.39.00.50) from Cambodia pay 10% in duties: a duty-free base rate plus Section 301 – Forced Labor (10%).

Duties on goods entered Oct 26, 2026 at the general rate (Column 2 where it applies), with tariff data verified through 2026 HTS Revision 20. Totals are before customs fees (MPF, HMF) and any antidumping or countervailing duties (AD/CVD); with a free account, the calculator checks the AD/CVD cases that may cover your import. Some tariffs and exemptions depend on details such as metal content or end use, which the calculator asks about. See US tariffs for every country.

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Example alert

New tariff action affects 1 of your imports

8431.39.00.50from China37.5% → 47.5%

Its rate today, if a new 10% tariff were added

Top origins · US imports 2025

Top Origins: Countries the US Imports HTS 8431.39.00.50 From

In 2025 the US imported $60M of parts suitable for use solely or…, of oil and gas field machinery (HTS 8431.39.00.50), down 13% on 2024, mostly from Canada (35%), Germany (21%) and India (10%). Each country's total duty today is shown beside its imports.

Country of originUS imports, 2025Sharevs 2024Total duty today
Canada$21M35%21%10%0% with USMCA
Germany$13M21%140%10%
India$6M10%38%10%
China$4M7%42%37.5%
Netherlands$4M6%5%10%
Mexico$3M6%61%10%0% with USMCA
Norway$2M4%50%12.5%
Italy$2M3%34%10%
Poland$1M2%18%10%
Denmark$1M2%36%10%

Source: U.S. Census Bureau, general imports. Duty on a $10,000 ocean shipment entered today, before customs fees. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Related codes

Other HTS Codes at This Level

Legal notes

Relevant HTS Notes

Official USITC notes that may affect classification under HTS 8431.39.00.50.

CBP rulings

Related CROSS Rulings for HTS 8431.39.00.50

CBP classification rulings related to 8431.39.00.50. Open a ruling to read how Customs classified a similar product.

hq 955730Feb 3, 1994

Conveyor Belts of Metal Wire, Belts With Plate Links of Welded Stainless or Galvanized Wire; Drive Sprockets for Continuous Conveyors; Section XVI, Note 1(ij), Note 2 Dear Mr. Meeker:

7326.20.008431.39.00
hq H319259Apr 4, 2022

Request for reconsideration of NY N315819 (12/03/20); Tariff classification of a structural frame for a portable container tilter from China

8431.39.00
hq 963789Oct 10, 2000

Protest 2704-99-102939; Wicket Leaves, Parts of Machines for Drying Screen Printed Material

8431.39.00
hq 086019Mar 24, 1990

Internal Advice No. 53/89, Request for reconsideration of Headquarters Ruling Letter 084811 and New York Ruling Letter 834692

8428.90.008431.39.008431.49.10908483.50.80809817.00.509817.00.60
hq 959577Feb 11, 1997

PRD 3501-95-100266; Poultry-Keeping Machinery Imported in Separate Shipments; Poultry Incubators and Brooders, Heading 8436 ; Wire Cages, Automatic Feeding Devices, Manure Removing Apparatus; Articles Imported Unfinished and Unassembled, Essential Character, GRI 2(a); Parts, Heading 8431; Section XVI, Note 2, Nidec Corporation v. United States, S.G.B. Scaffolding and Shoring Co., Inc. v. United States, HQ 952143

7308.90.958414.90.108431.39.00
hq 963817Sep 12, 2001

Protest 1703-99-100214; roller table parts

8431.39.0010
Questions

HTS 8431.39.00.50 FAQ

Something else? Ask us.

What does HTS code 8431.39.00.50 cover?

HTS code 8431.39.00.50 covers parts suitable for use solely or…, of oil and gas field machinery (Of oil and gas field machinery), classified under Chapter 84 (Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof) in the US Harmonized Tariff Schedule. The general duty rate is Free.

What is the duty rate for HTS 8431.39.00.50?

The general (Column 1) rate of duty for HTS 8431.39.00.50 is Free. The Column 2 rate, for countries without normal trade relations, is 35%. Additional Chapter 99 tariffs, such as Section 301 and Section 232, can apply on top depending on the country of origin.

What is the US tariff on parts suitable for use solely or…, of oil and gas field machinery (HTS 8431.39.00.50) from China?

As of Oct 26, 2026, US imports of parts suitable for use solely or…, of oil and gas field machinery (HTS 8431.39.00.50) from China pay 37.5% in duties: a duty-free base rate plus Section 301 – China (25%) and Section 301 – Forced Labor (12.5%).

What is the US tariff on parts suitable for use solely or…, of oil and gas field machinery (HTS 8431.39.00.50) from Vietnam?

As of Oct 26, 2026, US imports of parts suitable for use solely or…, of oil and gas field machinery (HTS 8431.39.00.50) from Vietnam pay 12.5% in duties: a duty-free base rate plus Section 301 – Forced Labor (12.5%).

What is the US tariff on parts suitable for use solely or…, of oil and gas field machinery (HTS 8431.39.00.50) from Mexico?

As of Oct 26, 2026, US imports of parts suitable for use solely or…, of oil and gas field machinery (HTS 8431.39.00.50) from Mexico pay 10% in duties: a duty-free base rate plus Section 301 – Forced Labor (10%). Goods that qualify for USMCA pay 0%.

Where does the US import HTS 8431.39.00.50 from?

In 2025 the US imported $60M of parts suitable for use solely or…, of oil and gas field machinery under HTS 8431.39.00.50, mostly from Canada (35%), Germany (21%) and India (10%), according to U.S. Census Bureau import data.

Which country has the lowest US duty on HTS 8431.39.00.50?

Of the 20 largest sources of US imports, the lowest total duty on HTS 8431.39.00.50 is 10%, from Mexico, Canada and 11 more, as of the tariffs in effect on 2026-10-26.

Sources

Primary Sources

The official documents behind the rates and tariffs on this page. Duties are worked out from them as of Revision 20 (2026); check the legal text before you file.