Heading 8431: Parts suitable for use solely or principally with the machinery of headings 8425 to 8430
In chapter 84, Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof. 10 rate lines, laid out as HTS Revision 20 (2026) prints them.
| HTS number | Description | Units | 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. |
Rates are quoted as printed. Each 8-digit number opens its own page with footnotes and cited chapter 99 headings.
Watch lines in heading 8431
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What this page leaves to your broker
This page quotes the schedule. It does not add the rates together, and it does not say whether a chapter 99 heading applies to a shipment: that turns on the country of origin, the dates and the U.S. notes to chapter 99. Section 301, Section 232 and other chapter 99 measures list the goods they cover in those notes and in Federal Register notices, so a line can be covered by a heading its footnotes never cite. A licensed customs broker makes the determination.
Built September 29, 2026 from HTS Revision 20 (2026) (USITC release 2026HTSRev20, published September 23, 2026, current since September 28, 2026). The schedule changes often; USITC's own site always has the current text.