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HSChapter 68
U.S. imports of millstones & grindstones for milling, grinding or pulping (HS 680410) totaled $1.2M in April 2026, traded with 23 countries.
Importers of Millstones & Grindstones for Milling, Grinding or Pulping paid $126K in duties in April 2026 — an effective duty rate of 11% on $1.1M in dutiable value, based on actual customs collections rather than the published tariff schedule. Millstones & Grindstones for Milling, Grinding or Pulping imports of $1.2M in April 2026 ran 57% above the year-to-date monthly average of $768K.
Last updated: April 2026 dataNatural and composite millstones and grindstones used in industrial milling, grinding, and pulping operations are consolidated under a single 10-digit line, 6804100000. China is the leading US supplier, with Italy and Mexico also notable sources. These articles serve grain milling, mineral processing, and pulp-and-paper industries, and their classification turns on the distinction between stones used for milling or pulping — covered here — and abrasive grinding wheels used for sharpening or surface finishing, which fall under 6804.2x. The functional end use of the stone, not its material composition, is the primary classification criterion.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
The key criterion is functional end use: stones designed and used for milling grain, grinding minerals, or pulping fibrous materials classify under 6804.10, while wheels and stones used for cutting, sharpening, or surface-finishing workpieces classify under 6804.21 or 6804.22. Product literature, technical specifications, and the importer's end-use documentation all support the classification determination.
Replacement segments that are identifiable as parts of millstones or grindstones for milling or pulping are generally classified with the complete article under 6804.10 unless a more specific parts provision applies elsewhere in the schedule. Importers should confirm with a licensed customs broker when the segment is a standalone abrasive article that could independently classify under a different heading.
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Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| ISRAEL | $700K | -- | -$700K |
| MEXICO | $60K | $225K | +$165K |
| COSTA RICA | -- | $198K | +$198K |
| CANADA | -- | $167K | +$167K |
| AUSTRALIA | $155K | $3K | -$152K |
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 6804100000 | MILLSTONES AND GRINDSTONES FOR MILLNG GRNDG PLPNG | $1.2M | 11.03% | $126K |
MILLSTONES AND GRINDSTONES FOR MILLNG GRNDG PLPNG
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 6804100000 | MILLSTONES AND GRINDSTONES FOR MILLNG GRNDG PLPNG | $828K |
MILLSTONES AND GRINDSTONES FOR MILLNG GRNDG PLPNG
38.1K no
OTHR ARTS NESOI OF CMNT ETC
HS 681099
MARBLE, TRAVERTINE AND ALABASTER, WORKD, NESOI
HS 680291
WORDK MONUMENTAL OR BUILDING STONE, NESOI
HS 680299
GRANITE, NESOI
HS 680293
ABRASIVES ON A BASE MATERIAL OTH THN FABRC O PAPER
HS 680530
ARTICLES OF ASPHALT OR SIMILAR MATERIALS IN ROLLS
HS 680710
| State | Imports | Exports | Balance |
|---|---|---|---|
| Illinois | $741K | $120K | -$622K |
| California | $160K | $48K | -$112K |
| New York | -- | $192K | +$192K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| NEWARK, NJ | $699K | $43K | -$656K |
| NEW ORLEANS, LA | $24K | $195K | +$171K |
| LAREDO, TX | $36K | $126K | +$90K |