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HSChapter 84
U.S. imports of parts & attachments (nesoi) for derricks, cranes, bulldozers, graders & related machinery (HS 843149) totaled $335.8M in April 2026, traded with 78 countries.
Importers of Parts & Attachments (NESOI) for Derricks, Cranes, Bulldozers, Graders & Related Machinery paid $98.8M in duties in April 2026 — an effective duty rate of 31% on $316.4M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 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.
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.
| Country | Imports | Exports | Balance |
|---|---|---|---|
| CANADA | $30.2M | $96.1M | +$66.0M |
| MEXICO | $67.7M | $15.8M | -$51.9M |
| CHINA | $67.8M | $2.8M | -$65.1M |
| JAPAN | $37.5M | $1.3M | -$36.2M |
| KOREA, SOUTH | $27.8M | $89K | -$27.7M |
Supplier Network
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Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 8431499094 | PARTS OF MACH OF HEADING 8426, 8429 OR 8430, NESOI | $182.0M | 29.12% | $49.9M |
| 8431499041 | PTS,BCKHOE,SHOVL,CLMSHL,DRGLINE,EX CST AXLE HOUSIN | $81.7M | 37.34% | $29.8M |
| 8431499020 | ATTACH FOR MOUNT ON MAC OF HEAD8426,8429,8430NESOI | $17.5M | 30.81% | $5.1M |
| 8431491080 | PARTS OF MACHINERY OF HEADING 8426 NESOI | $12.7M | 26.14% | $3.3M |
| 8431491010 | PTS OF OVHEAD TRAVL,TRANSPT,GATRY,BRDGE,JIB CRANES | $9.0M | 26.97% | $2.3M |
| 8431499034 | PTS,COAL,ROCK CUT & TUNEL MAC,EXC CAST AXLE HOUSIN | $4.9M | 33.14% | $1.2M |
| 8431499050 | TRACK LINKS | $4.6M | 36.92% | $1.7M |
| 8431499039 | PTS,BCKHOE,SHVL,CLMSHL,DRGLINE,AXL OF COPPER/ALLYS | $3.7M | 32.28% | $1.2M |
| 8431499010 | FRONT-END LOADER ATTACHMENTS FOR MOUNTING ON MACH | $3.3M | 26.70% | $818K |
| 8431499092 | PRTS OF MACH 8426/8429/8430, OF COPPER/COPPR ALLYS | $3.2M | 28.31% | $278K |
| 8431499090 | WHL/TIRE ASSB OF MACH HEADG 8426, 8429 OR 8430 | $3.2M | 27.61% | $857K |
| 8431491060 | PTS OF MOBIL LFT FRME,STRAD CARR & WRKS TRKS/CRANE | $3.1M | 25.26% | $612K |
| 8431499081 | STEEL FORGINGS FOR MACH OF HEAD 8426,8429 OR 8430 | $2.7M | 28.11% | $769K |
| 8431499045 | SCRAPER BOWLS FOR SCRAPERS | $2.0M | 26.29% | $515K |
| 8431499005 | BACKHOE ATTACHMENTS FOR MOUNTING ON MACHINERY | $851K | 31.92% | $249K |
| 8431499055 | CAST AXLE HOUSIN FR MAC,HEAD 8426,8429,8430,NESOI | $555K | 35.52% | $155K |
| 8431499015 | RIPPERS AND ROOTERS FOR MOUNTING ON MACHINERY | $352K | 29.22% | $98K |
| 8431499032 | PTS,COAL,RCK CUT &TUNEL MAC,OF COPPER/COPPER ALLYS | $110K | 26.69% | $25K |
| 8431499038 | WH TR ASSB OF BCKH,SHOV,CLMSL,DRGLN,EX CST AX HOUS | $100K | 36.43% | $36K |
| 8431491070 | PARTS OF MCHNRY OF 8426,OF COPPER OR CPPER ALLYS | $85K | 25.04% | $669 |
| 8431499084 | ROAD WHEELS OF MACH OF HEAD 8426, 8429 OR 8430 | $82K | 27.84% | $21K |
| 8431499035 | CAST AXLE HOUSIN FR BCKHOE,SHOVL,CLAMSHEL,DRAGLINE | $34K | 19.86% | $7K |
| 8431499036 | RD WHL OF BCKHE,SHOV,CLMSL,DRGLN,EX CST AXLE HOUSN | $10K | 31.04% | $3K |
| 8431499044 | PTS,BCKHOE,SHOVL,CLMSHL,DRGLINE,EX CST AXLE HOUSIN | $0 | -- | -- |
| 8431499030 | PTS,COAL,ROCK CUT & TUNEL MAC,EXC CAST AXLE HOUSIN | $0 | -- | -- |
| 8431499025 | CAST AXLE HOUSING FR COAL OR ROCK CUT & TUNNEL MAC | $0 | -- | -- |
| 8431491090 | PARTS OF MACHINERY OF HEADING 8426 NESOI | $0 | -- | -- |
| 8431499095 | PARTS OF MACH OF HEADING 8426, 8429 OR 8430, NESOI | $0 | -- | -- |
PARTS OF MACH OF HEADING 8426, 8429 OR 8430, NESOI
PTS,BCKHOE,SHOVL,CLMSHL,DRGLINE,EX CST AXLE HOUSIN
ATTACH FOR MOUNT ON MAC OF HEAD8426,8429,8430NESOI
PARTS OF MACHINERY OF HEADING 8426 NESOI
PTS OF OVHEAD TRAVL,TRANSPT,GATRY,BRDGE,JIB CRANES
PTS,COAL,ROCK CUT & TUNEL MAC,EXC CAST AXLE HOUSIN
TRACK LINKS
PTS,BCKHOE,SHVL,CLMSHL,DRGLINE,AXL OF COPPER/ALLYS
FRONT-END LOADER ATTACHMENTS FOR MOUNTING ON MACH
PRTS OF MACH 8426/8429/8430, OF COPPER/COPPR ALLYS
WHL/TIRE ASSB OF MACH HEADG 8426, 8429 OR 8430
PTS OF MOBIL LFT FRME,STRAD CARR & WRKS TRKS/CRANE
STEEL FORGINGS FOR MACH OF HEAD 8426,8429 OR 8430
SCRAPER BOWLS FOR SCRAPERS
BACKHOE ATTACHMENTS FOR MOUNTING ON MACHINERY
CAST AXLE HOUSIN FR MAC,HEAD 8426,8429,8430,NESOI
RIPPERS AND ROOTERS FOR MOUNTING ON MACHINERY
PTS,COAL,RCK CUT &TUNEL MAC,OF COPPER/COPPER ALLYS
WH TR ASSB OF BCKH,SHOV,CLMSL,DRGLN,EX CST AX HOUS
PARTS OF MCHNRY OF 8426,OF COPPER OR CPPER ALLYS
ROAD WHEELS OF MACH OF HEAD 8426, 8429 OR 8430
CAST AXLE HOUSIN FR BCKHOE,SHOVL,CLAMSHEL,DRAGLINE
RD WHL OF BCKHE,SHOV,CLMSL,DRGLN,EX CST AXLE HOUSN
PTS,BCKHOE,SHOVL,CLMSHL,DRGLINE,EX CST AXLE HOUSIN
PTS,COAL,ROCK CUT & TUNEL MAC,EXC CAST AXLE HOUSIN
CAST AXLE HOUSING FR COAL OR ROCK CUT & TUNNEL MAC
PARTS OF MACHINERY OF HEADING 8426 NESOI
PARTS OF MACH OF HEADING 8426, 8429 OR 8430, NESOI
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8431499057 | PARTS, NESOI, OF MACHINERY OF HEADING 8429 OR 8430 | $120.7M |
| 8431499037 | PARTS OF BACKHOES,SHOVELS,CLAMSHELLS AND DRAGLINES | $42.8M |
| 8431491010 | PTS OF OVHEAD TRAVL,TRANSPT,GATRY,BRDGE,JIB CRANES | $9.9M |
| 8431491090 | PARTS OF MACHINERY OF HEADING 8426 NESOI | $9.6M |
| 8431499020 | ATTACH FOR MOUNT ON MAC OF HEAD8426,8429,8430NESOI | $8.2M |
| 8431499027 | PARTS OF COAL OR ROCK CUTTERS & TUNNELING MACH | $7.0M |
| 8431499010 | FRONT-END LOADER ATTACHMENTS FOR MOUNTING ON MACH | $3.4M |
| 8431491060 | PTS OF MOBIL LFT FRME,STRAD CARR & WRKS TRKS/CRANE | $1.9M |
| 8431499005 | BACKHOE ATTACHMENTS FOR MOUNTING ON MACHINERY | $1.9M |
| 8431499045 | SCRAPER BOWLS FOR SCRAPERS | $780K |
| 8431499015 | RIPPERS AND ROOTERS FOR MOUNTING ON MACHINERY | $542K |
PARTS, NESOI, OF MACHINERY OF HEADING 8429 OR 8430
1.0M no
PARTS OF BACKHOES,SHOVELS,CLAMSHELLS AND DRAGLINES
145.6K no
PTS OF OVHEAD TRAVL,TRANSPT,GATRY,BRDGE,JIB CRANES
95.9K no
PARTS OF MACHINERY OF HEADING 8426 NESOI
21.9K no
ATTACH FOR MOUNT ON MAC OF HEAD8426,8429,8430NESOI
11.2K no
PARTS OF COAL OR ROCK CUTTERS & TUNNELING MACH
37.4K no
FRONT-END LOADER ATTACHMENTS FOR MOUNTING ON MACH
1.1K no
PTS OF MOBIL LFT FRME,STRAD CARR & WRKS TRKS/CRANE
2.4K no
BACKHOE ATTACHMENTS FOR MOUNTING ON MACHINERY
444 no
SCRAPER BOWLS FOR SCRAPERS
1.1K no
RIPPERS AND ROOTERS FOR MOUNTING ON MACHINERY
89 no
TURBOJET AND TURBOPROLLER PARTS
HS 841191
| Port | Imports | Exports | Balance |
|---|---|---|---|
| LAREDO, TX | $63.9M | $9.9M | -$54.0M |
| SAVANNAH, GA | $45.3M | -- | -$45.3M |
| HOUSTON, TX | $28.6M | $12.8M | -$15.9M |