Nuclear Reactors, Boilers, Machinery · 1 pending regulation · 2 court cases · $329.8M monthly imports · 100% from 1 countries · Updated daily from USITC
General
Free
Special
Free
Column 2
35%
Trade Agreement Eligibility
Notes
[object Object]
Monthly Imports
$329.8M
2026-01
Trade Concentration
100%
from top 3 of 1 origins
Regulatory Pressure
MODERATE
13 rulings — · 1 reg · 2 CIT, 0 CAFC
Global Rates
🇺🇸 Free
🇬🇧 United Kingdom: N/A · 🇪🇺 European Union: N/A · 🇨🇦 Canada: Free · 🇧🇷 Brazil: 5 NCM codes
Compare All →
Data compiled from USITC HTS, US Census Bureau, CBP CROSS Rulings, Federal Register, CourtListener, CPSC SaferProducts.gov, 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 — $330M 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 |
|---|---|---|
| 8431.49.90 | Other | Free |
| 8431.49.90.05 | Backhoe attachments | — |
| 8431.49.90.10 | Front-end loader attachments | — |
| 8431.49.90.15 | Rippers and rooters | — |
| 8431.49.90.20 | Other | — |
| 8431.49.90.25 | Cast axle housings | — |
| 8431.49.90.32 | Of copper or copper alloys | — |
| 8431.49.90.34 | Other | — |
| 8431.49.90.35 | Cast axle housings | — |
| 8431.49.90.36 | Road wheels | — |
| 8431.49.90.38 | Wheel and tire assemblies | — |
| 8431.49.90.39 | Of copper or copper alloys | — |
| 8431.49.90.41 | Other | — |
| 8431.49.90.45 | Scraper bowls for scrapers of subheadings 8429.30 and 8430.69.01 | — |
| 8431.49.90.50 | Track links | — |
| 8431.49.90.55 | Cast axle housings | — |
| 8431.49.90.81 | Steel forgings | — |
| 8431.49.90.84 | Road wheels | — |
| 8431.49.90.90 | Wheel and tire assemblies | — |
| 8431.49.90.92 | Of copper or copper alloys | — |
| 8431.49.90.94 | Other | — |
Protest No. 4101-92-100022; Parts for Trenching Machines; Trenching Machines; HQ 046455; HQ 040129; Section XVI, Note 2(b); 8429.59.50; 8432.90.00 Dear Sir:
The tariff classification of certain replacement parts for excavating ground engagement tools from China
Backhoe Excavators; Disassembled; Incomplete; Knocked Down
NY D84998 Revoked; Carbide Wear Pads for Snow Plows and Motor Graders
NY D88328 Revoked; Track Chain, Rail and Link Assemblies
The tariff classification of steel hose fittings from Japan.
Protest and Application for Further Review No 3901-2016-100700; Classification Idlers, Idler Assemblies, and Bushings
Rubber Track; Rubber Coated Steel Track for Use With Excavators, Tractors, Tracked Carriers, and Agricultural and Construction Machinery; Outer Rubber Casing Reinforced With Steel Cord Combined With Metal Embeds; Composite Good, GRI 3(c); Heading 8431, Parts, Sole or Principal Use; THK America, Inc. v. U.S.; Heading 4012, Tires of Rubber
Protest 1303-99-100260; Transfer Gear Box With Drive Axle
Application for Further Review of Protest No. 3801-22-107986; Tariff Classification and Country of Origin of Cover Assemblies for a Backhoe Loader; Section 301 Measures
Protest and Application for Further Review No 3901-19-104467; Classification and applicability of Section 301 trade remedies of cast iron counterweights from China
Internal Advice Request; Classification of Certain Items Related to a Casing Oscillator
Request for Internal Advice; classification of negative brakesPort DirectorU.S. Customs and Border ProtectionPort of Charleston 200 East Bay StreetCharleston, SC 29401Attn Dionne Durham
Technical Corrections to the Harmonized Tariff Schedule of the United States
Technical corrections to the Harmonized Tariff Schedule of the United States.
PARTS OF OVERHEAD TRAVELING CRANES ON FIXED SUPPORT, TRANSPORTER CRANES, GANTRY CRANES, BRIDGE CRANES AND PORTAL OR PEDESTAL JIB CRANES
Census Bureau export classification matching this HTS import code.
