Parts and accessories suitable for use solely or — HTS 8466
Parts and accessories suitable for use solely or principally with the machines of headings 8456 to 8465, including work or tool holders, self-opening dieheads, dividing heads and other special attachments for the machines; tool holders for any type of tool for working in the hand
Chapter 84 › Heading 8466
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 8466 groups parts and accessories used solely or principally with machine tools in headings 8456 through 8465. These include items such as tool holders, work holders, self-opening dieheads, dividing heads, and other special attachments, plus holders for hand-operated tools. The heading is generally for the accessory or part itself, not for the complete machine.
To reach the correct 8-digit HTSUS code, first identify the accessory’s function and the type of machine or tool it is designed to serve. The subheadings commonly separate categories such as tool holders, work holders, dividing heads or other attachments, and parts. Further digits may distinguish the specific type, design, or material where the tariff structure provides for that distinction. Do not assume that a product belongs in 8466 merely because it can be used with a machine; its suitability for use solely or principally with the covered machines must be supported by the product’s design and commercial use.
What to check
- Identify the exact function: determine whether the item holds a tool, holds the workpiece, divides or positions work, performs a special attachment function, or is another machine part.
- Confirm the compatible machine category and review the descriptions for headings 8456 through 8465; use product manuals, specifications, and intended applications as evidence.
- Read every 8-digit option under heading 8466, including any distinctions based on accessory type, construction, or material, rather than choosing the first broad description that seems to fit.
- Check whether the item is a complete accessory, a replacement part, or a holder for a hand tool; those distinctions can lead to different subheadings.
- Verify the classification against current official HTSUS text and, when the design or principal-use analysis is unclear, obtain a customs broker’s or classification professional’s review.
HTS heading 8466 summary
Parts and accessories suitable for use solely or is a 4-digit product category containing 1 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 |
|---|---|
| 8466.20 | Work holders |
| 8466.30 | Dividing heads and other special attachments for machines |
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 |
|---|---|---|---|---|
| 8466.10.01 👉 | Tool holders and self-opening dieheads | 3.9% | Free | 45% |
"Special" shows the free-trade-agreement rate; open a code to see exactly which countries qualify.
Common questions
What products fall under HTS heading 8466?
Parts and accessories suitable for use solely or principally with the machines of headings 8456 to 8465, including work or tool holders, self-opening dieheads, dividing heads and other special attachments for the machines; tool holders for any type of tool for working in the hand. 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.