HTS heading 6804 · Chapter 68
HTS 6804: Millstones, grindstones, grinding wheels and the like,…
HTS heading 6804 covers millstones, grindstones, grinding wheels and the like, without frameworks, for grinding, sharpening, polishing, trueing or cutting, hand sharpening or polishing stones, and parts thereof, of natural stone, of agglomerated natural or artificial abrasives, or of ceramics, with or without parts of other materials. It has 7 tariff lines with a duty rate; the general (MFN) rates are Free (6 lines), 5¢/kg + 2% (1 line).
Imports may also owe Chapter 99 tariffs (Section 232, 301 or 201) depending on origin and date, plus the Merchandise Processing Fee and, by sea, the Harbor Maintenance Fee.
Rates from the 2026 HTS Revision 22, effective October 30, 2026. Source: U.S. International Trade Commission.
Tariff lines and duty rates
| HTS code | Description | General | Special | Column 2 | Estimate |
|---|---|---|---|---|---|
| 6804.10.00.00 | Millstones and grindstones for milling, grinding or pulping[No.] | Free | Free | Estimate → | |
| Other millstones, grindstones, grinding wheels and the like: | |||||
| 6804.21.00 | Of agglomerated synthetic or natural diamond | Free | 30% | ||
| 6804.21.00.10 | Segments for circular sawblades, consisting of diamond agglomerated with metal[No.] | Estimate → | |||
| 6804.21.00.20 | Articles consisting of a continuous rim segment of diamond agglomerated with metal, attached to circular plates of steel (whether or not attached to non-steel plates)[No.] | Estimate → | |||
| 6804.21.00.30 | Articles consisting of multiple segments of diamond agglomerated with metal, attached to circular plates of steel, without cutting parts (whether or not attached to non-steel plates)[No.] | Estimate → | |||
| 6804.21.00.90 | Other[No.] | Estimate → | |||
| 6804.22 | Of other agglomerated abrasives or of ceramics: | ||||
| 6804.22.10.00 | Bonded with synthetic resins[kg] | 5¢/kg + 2% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | $1.10/kg + 40% | Estimate → |
| Other: | |||||
| 6804.22.40.00 | Abrasive wheels[No.] | Free | 20% | Estimate → | |
| 6804.22.60.00 | Other[kg] | Free | 30% | Estimate → | |
| 6804.23.00.00 | Of natural stone[No.] | Free | Free | Estimate → | |
| 6804.30.00.00 | Hand sharpening or polishing stones[No.] | Free | Free | Estimate → |
11 lines shown. Statistical suffixes (the last two digits) inherit the rate of the 8-digit subheading above them.
Example: base duty and fees on $10000
For HTS 6804.10.00.00 at the general rate of Free, shipped by ocean, before any Chapter 99 tariffs:
| Base duty (Free) | $0.00 |
| Merchandise Processing Fee (0.3464%, min $34.58) | $34.64 |
| Harbor Maintenance Fee (0.125%) | $12.50 |
| Duty and fees | $47.14 |
Origin-specific tariffs can multiply this. Run this example from China or from Mexico to see every line.
Special program codes in this heading
- A, A*, A+
- Generalized System of Preferences (GSP)
- AU
- U.S.–Australia FTA
- BH
- U.S.–Bahrain FTA
- CL
- U.S.–Chile FTA
- CO
- U.S.–Colombia Trade Promotion Agreement
- D
- African Growth and Opportunity Act (AGOA)
- E, E*
- Caribbean Basin Economic Recovery Act
- IL
- U.S.–Israel FTA
- JO
- U.S.–Jordan FTA
- KR
- U.S.–Korea FTA (KORUS)
- MA
- U.S.–Morocco FTA
- OM
- U.S.–Oman FTA
- P, P+
- CAFTA-DR
- PA
- U.S.–Panama Trade Promotion Agreement
- PE
- U.S.–Peru Trade Promotion Agreement
- S, S+
- USMCA (United States–Mexico–Canada Agreement)
- SG
- U.S.–Singapore FTA
A special rate applies only when the goods qualify under that program's rules of origin and the claim is made at entry.