Tool holders and self-opening dieheads
Classified under heading 8466 — chapter 84 of the US Harmonized Tariff Schedule.
General rate applies to goods from countries with normal trade relations. Special rates require a program code (USMCA, GSP, AGOA…). Column 2 applies where normal trade relations do not.
Duty calculator
Estimate the duty owed on an import under HTS 8466.10.01.
Excludes merchandise processing fees, Section 301 duties, antidumping/countervailing duties and freight. Estimates only — not customs advice.
Where this rate sits
Heading 8466 contains 11 tariff lines. The general rate on this line is 3.9%, against an average of 4.3% across the heading (range 2.9%–4.7%).
| Metric | This line | Heading 8466 |
|---|---|---|
| General rate | 3.9% | avg 4.3% |
| Duty-free lines | no | 2 of 11 |
| Specific-rate lines | no | 0 |
Classification path
- 8466Parts 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
- 8466.10.01Tool holders and self-opening dieheads
All 11 tariff lines under heading 8466
Heading overview →| HTS code | Description | General | Col. 2 |
|---|---|---|---|
| 8466.10.01 | Tool holders and self-opening dieheadsthis page | 3.9% | 45% |
| 8466.20.10 | For machine tools used in cutting gears | 4.6% | 45% |
| 8466.20.80 | Other | 3.7% | 35% |
| 8466.30.60 | Machines | 2.9% | 35% |
| 8466.92.50 | Other | 4.7% | 35% |
| 8466.93.15 | Cast-iron parts not advanced beyond cleaning, and machined only for the removal of fins, gates, sprues and risers or to permit location in finishing machinery | Free | 10% |
| 8466.93.53 | Other | 4.7% | 35% |
| 8466.93.60 | Cast-iron parts not advanced beyond cleaning, and machined only for the removal of fins, gates, sprues and risers or to permit location in finishing machinery | Free | 10% |
| 8466.93.98 | Other | 4.7% | 35% |
| 8466.94.65 | Bed, base, table, column, cradle, frame, bolster, crown, slide, rod, tailstock and headstock castings, weldments or fabrications | 4.7% | 35% |
| 8466.94.85 | Other | 4.7% | 35% |
Using HTS 8466.10.01 correctly
A ten-digit HTS number has three parts: the four-digit heading, the six-digit international subheading shared by every WTO member, and the two-digit US statistical suffix. 8466.10.01 is a US national line — the same product may carry a different suffix in the EU TARIC or in another country's tariff.
Classification is determined by the General Rules of Interpretation, not by what the product is called on the invoice. If your goods could fall in two headings, GRI 1 sends you to the heading with the most specific description; GRI 3 breaks ties by essential character. A GRI 3(b) mistake is the single most common reason an entry gets reclassified and billed for unpaid duty plus interest.