Chapter 84: Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof
HTS heading 8431: Parts suitable for use solely or principally with the machinery of headings 8425 to 8430
54 numbered lines under heading 8431, including 44 10-digit statistical lines. The first six digits are the international HS subheading; the general column is the normal US duty rate.
| HTS code | Description | Unit | General | Special | Column 2 |
|---|---|---|---|---|---|
| 8431 | Parts suitable for use solely or principally with the machinery of headings 8425 to 8430: | ||||
| 8431.10.00 | Of machinery of heading 8425 | Free | 35% | ||
| 8431.10.00.10 | Of machinery of subheading 8425.11 or 8425.19 | No. | |||
| 8431.10.00.90 | Other | No. | |||
| 8431.20.00.00 | Of machinery of heading 8427 | No. | Free | 35% | |
| Of machinery of heading 8428: | |||||
| 8431.31.00 | Of passenger or freight elevators other than continuous action, skip hoists or escalators | Free | 35% | ||
| 8431.31.00.20 | Of skip hoists | No. | |||
| 8431.31.00.40 | Of escalators | No. | |||
| 8431.31.00.60 | Other | No. | |||
| 8431.39.00 | Other | Free | 35% | ||
| 8431.39.00.10 | Of elevators and conveyors | No. | |||
| Other: | |||||
| 8431.39.00.50 | Of oil and gas field machinery | No. | |||
| 8431.39.00.70 | Of the woodland log handling equipment of statistical reporting number 8428.90.0310 | No. | |||
| 8431.39.00.80 | Other | No. | |||
| Of machinery of heading 8426, 8429 or 8430: | |||||
| 8431.41.00 | Buckets, shovels, grabs and grips | Free | 35% | ||
| 8431.41.00.20 | Shovel attachments | No. | |||
| 8431.41.00.40 | Clamshell (grappler) attachments | No. | |||
| 8431.41.00.60 | Dragline buckets | No. | |||
| 8431.41.00.80 | Other | No. | |||
| 8431.42.00.00 | Bulldozer or angledozer blades | No. | Free | 35% | |
| 8431.43 | Parts for boring or sinking machinery of subheading 8430.41 or 8430.49: | ||||
| 8431.43.40.00 | Of offshore oil and natural gas drilling and production platforms | No. | Free | 45% | |
| 8431.43.80 | Other | Free | 35% | ||
| Of oil and gas field machinery: | |||||
| 8431.43.80.20 | Tool joints, whether or not forged | No. | |||
| 8431.43.80.40 | Drill pipe fitted with tool joints | No. | |||
| 8431.43.80.60 | Other | No. | |||
| 8431.43.80.90 | Of other boring or sinking machinery | No. | |||
| 8431.49 | Other: | ||||
| 8431.49.10 | Of machinery of heading 8426 | Free | 35% | ||
| 8431.49.10.10 | Of machinery of subheadings 8426.11, 8426.19 and 8426.30 | No. | |||
| 8431.49.10.60 | Of mobile lifting frames, straddle carriers and works trucks fitted with a crane | No. | |||
| Other: | |||||
| 8431.49.10.70 | Of copper or copper alloys | No. | |||
| 8431.49.10.80 | Other | No. | |||
| 8431.49.90 | Other | Free | 35% | ||
| Attachments for mounting on machinery: | |||||
| 8431.49.90.05 | Backhoe attachments | No. | |||
| 8431.49.90.10 | Front-end loader attachments | No. | |||
| 8431.49.90.15 | Rippers and rooters | No. | |||
| 8431.49.90.20 | Other | No. | |||
| Other: | |||||
| Parts of coal or rock cutters and tunneling machinery: | |||||
| 8431.49.90.25 | Cast axle housings | No. | |||
| Other: | |||||
| 8431.49.90.32 | Of copper or copper alloys | No. | |||
| 8431.49.90.34 | Other | No. | |||
| Parts of backhoes, shovels, clamshells and draglines: | |||||
| 8431.49.90.35 | Cast axle housings | No. | |||
| Other: | |||||
| 8431.49.90.36 | Road wheels | No. | |||
| 8431.49.90.38 | Wheel and tire assemblies | No. | |||
| Other: | |||||
| 8431.49.90.39 | Of copper or copper alloys | No. | |||
| 8431.49.90.41 | Other | No. | |||
| Other: | |||||
| 8431.49.90.45 | Scraper bowls for scrapers of subheadings 8429.30 and 8430.69.01 | No. | |||
| 8431.49.90.50 | Track links | No. | |||
| 8431.49.90.55 | Cast axle housings | No. | |||
| Other: | |||||
| 8431.49.90.81 | Steel forgings | kg | |||
| Other: | |||||
| 8431.49.90.84 | Road wheels | No. | |||
| 8431.49.90.90 | Wheel and tire assemblies | No. | |||
| Other: | |||||
| 8431.49.90.92 | Of copper or copper alloys | No. | |||
| 8431.49.90.94 | Other | No. |
Statistical (10-digit) lines without a rate use the rate of the 8-digit line above them. Additional duties such as Section 301 and Section 232 may apply; check them with the tariff checker.
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Request a free auditSource: Harmonized Tariff Schedule of the United States, 2026 HTS Revision 20 (effective 2026-09-28), U.S. International Trade Commission (hts.usitc.gov), imported 2026-10-07. Reference only; not legal or customs advice or a binding classification. Additional duties under Chapter 99 may apply. ShipWave is not affiliated with the USITC or U.S. Customs and Border Protection.