Harvesting or threshing machinery — HTS 8433
Harvesting or threshing machinery, including straw or fodder balers; grass or hay mowers; machines for cleaning, sorting or grading eggs, fruit or other agricultural produce, other than machinery of heading 8437; parts thereof
Chapter 84 › Heading 8433
2026 HTS Rev 19 Synced Rules verified Operational
Written to help non-specialists understand this page. Rates, dates, and legal facts come from the official records above and on the linked source.
HTS heading 8433 is a broad product category for machinery used in harvesting or threshing agricultural crops. It also covers straw or fodder balers, grass or hay mowers, and machines that clean, sort, or grade eggs, fruit, or other agricultural produce. Parts specifically intended for this machinery may also be included. Machinery for certain grain-milling or grain-processing functions belongs elsewhere, including heading 8437, so the heading’s exclusions matter.
To narrow a product to an 8-digit HTSUS code, first identify the machine’s principal function and the agricultural product or operation it handles. The more specific subheadings may distinguish equipment by type, such as a mower, baler, harvesting machine, or produce-grading machine, and may further divide products by design or use. Parts are classified separately from complete machines and generally require confirming that they are identifiable for use with machinery covered by the heading. Read the full heading, subheading descriptions, legal notes, and applicable statistical suffixes rather than choosing only by a product name.
What to check
- Describe the machine’s actual operation, not just its marketing name, and identify whether it harvests, threshes, mows, bales, cleans, sorts, or grades.
- Check whether the equipment is a complete machine, a combination machine, an attachment, or a replacement part; classification can change with that distinction.
- Confirm the agricultural material handled—such as grass, hay, eggs, fruit, or another crop—and compare it with the wording of the candidate subheadings.
- Review the exclusions, especially the boundary with heading 8437, and determine whether the machine performs grain-processing functions covered elsewhere.
- Use the current HTSUS, product specifications, drawings, and manufacturer information; request customs-broker or other classification advice when the function or principal use is unclear.
HTS heading 8433 summary
Harvesting or threshing machinery is a 4-digit product category containing 6 published product-code lines in this snapshot. A heading does not carry one universal duty rate; classification must be narrowed to the line matching the product facts.
How to find your code in this category
A heading is a product category. To get the exact duty, narrow from this 4-digit heading to a sub-category (usually by material), then open the 8-digit code that matches your product.
Open any code in the tables below to see its exact duty rate, a duty calculator (enter your shipment value → estimated duty and landed cost), the rate-change history chart, and the country-by-country breakdown (including Section 301/232 add-on duties).
Why you have to click in: a single category can contain products with very different duties. The rate depends on the specific product — its material and construction — and on the country of origin, and those only get pinned down at the 8-digit code level. That is why this page points you to codes instead of showing one rate for the whole category.
Sub-categories
| Code | Description |
|---|---|
| 8433.90 | Parts |
Product codes & duty rates
👇 Each row is a specific product code — click a blue code to open its full page with exact duty rates by country, the rate-history chart, and a duty calculator. 👉
| Code | Description | General (MFN) | Special | Column 2 |
|---|---|---|---|---|
| 8433.11.00 👉 | Powered, with the cutting device rotating in a horizontal plane | Free | — | 30% |
| 8433.19.00 👉 | Other | Free | — | 30% |
| 8433.20.00 👉 | Other mowers, including cutter bars for tractor mounting | Free | — | Free |
| 8433.30.00.00 👉 | Other haymaking machinery | Free | — | Free |
| 8433.40.00.00 👉 | Straw or fodder balers, including pick-up balers | Free | — | Free |
| 8433.60.00 👉 | Machines for cleaning, sorting or grading eggs, fruit or other agricultural produce | Free | — | Free |
"Special" shows the free-trade-agreement rate; open a code to see exactly which countries qualify.
Common questions
What products fall under HTS heading 8433?
Harvesting or threshing machinery, including straw or fodder balers; grass or hay mowers; machines for cleaning, sorting or grading eggs, fruit or other agricultural produce, other than machinery of heading 8437; parts thereof. To classify a specific item you must pick the matching sub-category and 8-digit code above; the right choice usually depends on the material and construction of the product.
How do I choose the right code within this category?
Start from the sub-categories (typically divided by material—for example cotton versus man-made fibers), then open the active 8- or 10-digit code that matches the product. When unsure, a licensed customs broker or a CBP binding ruling can confirm the classification.
Reference information only, not customs, legal, or classification advice. Confirm the current code and rate against the official HTS before you import.