U.S. exports of Railway & Tramway Coupling Devices, Buffers, and Parts (HS 860730) totaled $9.1M in August 2026.
Importers of Railway & Tramway Coupling Devices, Buffers, and Parts paid $1.8M in duties in August 2026, an average duty rate of 28.39% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Railway & Tramway Coupling Devices, Buffers, and Parts imports of $6.9M in August 2026 ran 16% above the year-to-date monthly average of $5.9M.
Last updated: August 2026 dataHooks, knuckle couplers, draft gear, and buffer assemblies that physically connect railway cars and absorb longitudinal shock are classified here, with the US schedule offering notable granularity: assembled freight rail couplers (8607301010), freight rail coupler parts (8607301050), and broader coupling/buffer provisions for passenger and freight stock (8607301090) and locomotives (8607305000). Mexico and Poland are the top two US import sources, with China and India also significant. Freight rail couplers in the US market must conform to AAR interchange standards, so specification compliance is as important as tariff classification when sourcing internationally.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
401 import shipments a month
The US freight rail network uses a standardized AAR knuckle coupler system, and the volume of coupler trade is large enough to warrant statistical tracking at the 10-digit level. 8607301010 covers complete assembled couplers, while 8607301050 covers individual parts such as knuckles, locks, and yokes — allowing CBP and industry analysts to monitor both finished assemblies and component flows separately.
Couplers and parts sourced from China may be subject to Section 301 tariffs. Importers should also verify whether any antidumping or countervailing duty orders apply to specific coupler components from particular origins, as the rail supply chain draws from multiple countries including India and Poland. A licensed customs broker can confirm current order scope.
Subheading 4 of 8 in heading 8607
Subheading 860730 · $9.1M of $84.0M
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ImportsExports
Imports
$6.9MYoY · free account
Exports
$9.1MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $72.1M of Railway & Tramway Coupling Devices, Buffers, and Parts and exported $100.0M.
Through August 2026. Source: U.S. Census Bureau.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 8607301050 | Freight Rail Coupler Parts | $2.5M | 26.70% | 98.51% | $662K |
| 8607305000 | Hooks, Buffers & Parts, NESOI (Inc Locomotives) | $1.9M | 26.30% | 97.61% | $511K |
| 8607301090 | Hooks & Other Couplings, Buffers, For 8605 or 8606 | $1.4M | 38.56% | 93.10% | $532K |
| 8607301010 | Assembled Freight Rail Couplers | $526K | 17.41% | 76.38% | $92K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8607301000 | Hooks & Other Couplings, Buffers, For 8605 or 8606 | $5.9M |
| 8607305000 | Hooks, Buffers & Parts, NESOI (Inc Locomotives) | $3.2M |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Exports · August 2026
destination
Mexico and Canada together take 69% of it.
customs district
origin
entry
rate provision · imports
3.4% enters free of duty; duty collected equals 28.39% of imports for consumption.