Chapter 84 · HTS release 2026HTSRev21

HTS 8431 Parts suitable for use solely or principally with the machinery of headings 8425 to 8430

Base rates and the additional US duties for imports from the main origins on entry date 2026-10-09, from the HTS Calculator duty engine.

Base rate (column 1 general): Free
Additional duty, main origins: 0–50%
Statistical lines: 44
Entry date shown: 2026-10-09 (dataset 1.0.0)

Additional duties for the main origins

Additional duties on 2026-10-09
Origin	Additional duty	Measures
China	10–50%	Section 232, Section 301
Mexico	0–35%	Section 232, Section 301
Canada	0–35%	Section 232, Section 301
Vietnam	10–25%	Section 232, Section 301
Germany	10–25%	Section 232, Section 301

Range of the Chapter 99 duties (percent of customs value) across the lines of this heading. A range means the result differs between lines or depends on facts about the goods; an asterisk marks lines whose duty also depends on a specific (per unit) base rate. Other origins (Japan, South Korea, Taiwan, India, United Kingdom and any other country): in the calculator and the API.

Chapter 99 headings on these lines

9903.05.29 Section 301
9903.05.31 Section 301
9903.05.39 Section 301
9903.05.55 Section 301
9903.05.84 Section 301
9903.05.90 Section 301
9903.05.93 Section 301
9903.05.94 Section 301
9903.74.08 Section 232
9903.74.10 Section 232
9903.74.11 Section 232
9903.82.03 Section 232
9903.82.06 Section 232
9903.82.07 Section 232
9903.82.09 Section 232
9903.82.10 Section 232
9903.82.20 Section 232
9903.82.21 Section 232
9903.82.22 Section 232
9903.88.01 Section 301
9903.88.69 Section 301
9903.94.05 Section 232
9903.94.06 Section 232
9903.94.53 Section 232

Every line, every origin, with citations

This page sums heading 8431 up. The duty for one line, origin and date comes from the duty engine:

Base rate plus each Chapter 99 line, in percent and in dollars
Citations to the Federal Register, CBP and the USITC, with the quoted text
The lines considered and not applied, and why
Any origin, any entry date from 2025-01-01 to 2026-10-09

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Lines in this heading

The 44 statistical lines of heading 8431

Each code opens the free calculator for that line on 2026-10-09: base rate, every Chapter 99 line with its citations, and the duty in dollars.

8431.10.00.10Of machinery of heading 8425 › Of machinery of subheading 8425.11 or 8425.19
8431.10.00.90Of machinery of heading 8425 › Other
8431.20.00.00Of machinery of heading 8427
8431.31.00.20… › Of passenger or freight elevators other than continuous action, skip hoists or escalators › Of skip hoists
8431.31.00.40… › Of passenger or freight elevators other than continuous action, skip hoists or escalators › Of escalators
8431.31.00.60… › Of passenger or freight elevators other than continuous action, skip hoists or escalators › Other
8431.39.00.10… › Other › Of elevators and conveyors
8431.39.00.50… › Other › Of oil and gas field machinery
8431.39.00.70… › Other › Of the woodland log handling equipment of statistical reporting number 8428.90.0310
8431.39.00.80… › Other › Other
8431.41.00.20… › Buckets, shovels, grabs and grips › Shovel attachments
8431.41.00.40… › Buckets, shovels, grabs and grips › Clamshell (grappler) attachments
8431.41.00.60… › Buckets, shovels, grabs and grips › Dragline buckets
8431.41.00.80… › Buckets, shovels, grabs and grips › Other
8431.42.00.00Of machinery of heading 8426, 8429 or 8430 › Bulldozer or angledozer blades
8431.43.40.00… › Parts for boring or sinking machinery of subheading 8430.41 or 8430.49 › Of offshore oil and natural gas…
8431.43.80.20… › Of oil and gas field machinery › Tool joints, whether or not forged
8431.43.80.40… › Of oil and gas field machinery › Drill pipe fitted with tool joints
8431.43.80.60… › Of oil and gas field machinery › Other
8431.43.80.90… › Other › Of other boring or sinking machinery
8431.49.10.10… › Of machinery of heading 8426 › Of machinery of subheadings 8426.11, 8426.19 and 8426.30
8431.49.10.60… › Of machinery of heading 8426 › Of mobile lifting frames, straddle carriers and works trucks fitted with a…
8431.49.10.70… › Other › Of copper or copper alloys
8431.49.10.80… › Other › Other
8431.49.90.05… › Attachments for mounting on machinery › Backhoe attachments
8431.49.90.10… › Attachments for mounting on machinery › Front-end loader attachments
8431.49.90.15… › Attachments for mounting on machinery › Rippers and rooters
8431.49.90.20… › Attachments for mounting on machinery › Other
8431.49.90.25… › Parts of coal or rock cutters and tunneling machinery › Cast axle housings
8431.49.90.32… › Other › Of copper or copper alloys
8431.49.90.34… › Other › Other
8431.49.90.35… › Parts of backhoes, shovels, clamshells and draglines › Cast axle housings
8431.49.90.36… › Other › Road wheels
8431.49.90.38… › Other › Wheel and tire assemblies
8431.49.90.39… › Other › Of copper or copper alloys
8431.49.90.41… › Other › Other
8431.49.90.45… › Other › Scraper bowls for scrapers of subheadings 8429.30 and 8430.69.01
8431.49.90.50… › Other › Track links
8431.49.90.55… › Other › Cast axle housings
8431.49.90.81… › Other › Steel forgings
8431.49.90.84… › Other › Road wheels
8431.49.90.90… › Other › Wheel and tire assemblies
8431.49.90.92… › Other › Of copper or copper alloys
8431.49.90.94… › Other › Other

Recent changes

Between 2025-10-09 and 2026-10-09: the Chapter 99 headings applied changed for all 5 main origins; 12 statistical line changes. Dated changes, with their sources: the change list and the Tariff Change Feed.

Scope

We do not classify goods. These pages show reference rates for HTS codes. Choosing the code for an entry is the importer's responsibility, and entries are filed by the importer of record or a licensed customs broker. Duties shown are calculations from public sources, not legal advice.