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HSChapter 86
U.S. exports of railway & tramway coupling devices, buffers, and parts (HS 860730) totaled $8.4M in July 2026.
Importers of Railway & Tramway Coupling Devices, Buffers, and Parts paid $1.8M in duties in July 2026 — an effective duty rate of 34% on $5.3M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: July 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.
363 shipments/mo
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 · $6.4M of $84.1M
Supplier Network
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HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 8607301050 | Freight Rail Coupler Parts | $2.5M | 29.41% | 88.74% | $723K |
| 8607305000 | Hooks, Buffers & Parts, NESOI (Inc Locomotives) | $1.7M | 28.91% | 100.00% | $494K |
| 8607301090 | Hooks & Other Couplings, Buffers, For 8605 or 8606 | $1.4M | 38.76% | 85.72% | $525K |
| 8607301010 | Assembled Freight Rail Couplers | $839K | 7.54% | 34.09% | $63K |
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 | $5.7M |
| 8607305000 | Hooks, Buffers & Parts, NESOI (Inc Locomotives) | $2.6M |
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.
ImportsExports
Imports
$6.4MYoY · Pro
Exports
$8.4MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
Exports · July 2026
destination
Mexico and Canada together take 81% of it.
customs district
origin
entry
rate provision · imports
0.8% enters free of duty; the effective duty rate is 28.38%.