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U.S. imports of parts & attachments (nesoi) for derricks, cranes, bulldozers, graders & related machinery (HS 843149) totaled $324.0M in July 2026, traded with 80 countries.
Importers of Parts & Attachments (NESOI) for Derricks, Cranes, Bulldozers, Graders & Related Machinery paid $85.1M in duties in July 2026 — an effective duty rate of 27% on $310.8M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: July 2026 dataChina is the dominant supplier of this broad category, which spans crane parts, backhoe and front-end loader attachments, track links, scraper bowls, road wheels, and steel forgings for machinery of headings 8426, 8429, and 8430 — making Section 301 tariff exposure a routine cost consideration for US importers. The heading's 30-plus 10-digit tariff lines create significant classification complexity: separate lines exist for cast axle housings, road wheels, wheel-and-tire assemblies, and copper-alloy parts, each tied to a specific parent machine heading. Mexico and Japan are the second and third leading sources, offering supply-chain alternatives for buyers seeking to reduce Section 301 exposure.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
23.3K shipments/mo
Cast axle housings are singled out because they are high-value, structurally distinct castings that customs authorities and the ITC track separately for statistical and duty purposes. Lines such as 8431499035 (backhoe/shovel/clamshell/dragline cast axle housings) and 8431499055 (cast axle housings for other 8426/8429/8430 machinery) must be distinguished from road wheels (8431499084) and general parts (8431499094). Correct classification requires confirming both the article type and the parent machine heading.
If the forging is imported in a form dedicated to use as a part of machinery under heading 8426, it would typically be classified under 8431499081 (steel forgings for machinery of headings 8426, 8429, or 8430). However, if the forging is not yet sufficiently advanced to be recognizable as a specific part, it may instead be classifiable as a steel forging under Chapter 72 or 73. A binding ruling from CBP is advisable when the article's degree of processing is ambiguous.
HSChapter 84
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Subheading 1 of 8 in heading 8431
Subheading 843149 · $324.0M of $831.4M
ImportsExports
Imports
$324.0MYoY · Pro
Exports
$224.8MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
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.
Imports · July 2026
origin
China and Mexico together supply 43% of it.
customs district
destination
entry
rate provision · imports
3.4% enters free of duty; the effective duty rate is 26.26%.