Nuclear Reactors, Boilers, Machinery · 1 court case · $296.8M monthly imports · 100% from 1 countries · Updated daily from USITC
General
Free
Special
Free
Column 2
Free
Trade Agreement Eligibility
Monthly Imports
$296.8M
2026-01
Trade Concentration
100%
from top 3 of 1 origins
Regulatory Pressure
LOW
4 rulings — · 0 reg · 1 CIT, 0 CAFC
Global Rates
🇺🇸 Free
🇬🇧 United Kingdom: N/A · 🇪🇺 European Union: N/A · 🇨🇦 Canada: Free · 🇧🇷 Brazil: 2 NCM codes
Compare All →
Data compiled from USITC HTS, US Census Bureau, CBP CROSS Rulings, CourtListener, HMRC / DG TAXUD / CBSA / SISCOMEX · As of 2026-04-28 · Updates monthly
100% of US imports for this code come from just 1 countries. High origin concentration increases exposure to trade disruptions or tariff escalations.
This is a high-volume import code — $297M in monthly US imports. Duty rate changes or trade remedy actions on this code have significant economic impact.
List 1 — ~$34B of Chinese goods (machinery, electronics, industrial components)
Active — 7.5%–25% additional duties on Chinese-origin goods across four tranches (Lists 1–4A), with higher 2024/2025 increases on targeted product categories.
Effective 2018-07-06
These additional tariffs apply on top of the general duty rate. View full trade remedy tracker →
| Code | Description | Rate |
|---|---|---|
| 8483.40 | Gears and gearing, other than toothed wheels, chain sprockets and other transmission elements entered separately; ball or roller screws; gear boxes and other speed changers, including torque converters: | — |
| 8483.40.10.00 | Torque converters | Free |
| 8483.40.30 | Imported for use with machines for making cellulosic pulp, paper or paperboard | Free |
| 8483.40.30.40 | Fixed ratio speed changers | — |
| 8483.40.30.80 | Other | — |
| 8483.40.50 | Other | 2.5% |
| 8483.40.50.10 | Fixed ratio speed changers | — |
| 8483.40.50.20 | Gear boxes and speed changers for wind turbines, as described in statistical note 6 to this chapter | — |
| 8483.40.50.80 | Other | — |
| 8483.40.70.00 | Other speed changers | 25¢ each + 3.9% |
| 8483.40.80.00 | Ball or roller screws | 3.8% |
| 8483.40.90.00 | Gears and gearing, other than toothed wheels, chain sprockets and other transmission elements entered separately | 2.5% |
The tariff classification and status under the North American Free Trade Agreement (NAFTA), of plastic injection molding machine castings; Article 509
Request for Reconsideration of HQ H255852; Tariff classification of a Turbo-Compound Gearbox
Tariff classification of transmission assemblies
Internal Advice Request, Tariff Classification of a Turbo-Compound Gearbox
TORQUE CONVERTERS
Census Bureau export classification matching this HTS import code.
