Product classification
HS code for Millstones: 6804.10
Millstones and grindstones, for milling, grinding or pulping.
Classification of millstones under HS 6804.10
Millstones are classified under HS code 6804.10. Chapter 68 covers articles of stone, plaster, cement, asbestos, mica, or similar materials. Heading 6804 specifically includes millstones, grindstones, grinding wheels, and the like, without frameworks, used for milling, grinding, or pulping. Subheading 6804.10 is dedicated to those used for milling, grinding, or pulping. These items are typically made of natural stone, agglomerated natural or artificial abrasives, or ceramics. The classification is based on the material composition and the specific industrial application. Even though these are parts of machinery, Note 1 to Chapter 84 specifically excludes articles of Chapter 68, meaning these stones must be classified in 6804 rather than as machinery parts in Chapter 84. This follows the General Rules of Interpretation which prioritize the material-based chapter when a specific exclusion exists in the machinery chapter.
- Covers
- Stones for flour mills
- Pulping stones for the paper industry
- Grinding stones for grain processing
- Natural stone millstones for traditional milling
- Agglomerated abrasive stones for industrial pulping
- Also under 6804.10
- Traditional European flour millstones
- industrial mineral grinding wheels
- specialized pulpwood grinders
- heritage grain processing stones
Codes often confused with 6804.10
Common mistake. Millstones are frequently misclassified under 8437.90 as parts of machinery for the milling of cereals. While they are indeed used in such machinery, Section XVI Note 1(a) specifically excludes millstones and similar articles of Chapter 68. Therefore, the material composition (stone or abrasive) dictates the classification in 6804. Another potential error is 6805, which covers natural or artificial abrasive powder or grain on a base of textile material, paper, or cardboard. Millstones are solid, rigid articles and do not have a flexible backing, distinguishing them from the coated abrasives found in 6805.
Top exporters and importers of HS 680410 (the code used for millstones), 2025
In 2025, the largest exporter of HS 680410 (the code used for millstones) in UN Comtrade data was the Philippines, with 20% of world exports; the largest importer in UN Comtrade data was Indonesia, with 14% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Figures cover everything classified under HS 680410, not only millstones.
Top exporters 2025 · share of world exports
- 1 Philippines $21M 20% of world exports
- 2 Israel $15M 14% of world exports
- 3 United States $14M 13% of world exports
World total: $108M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Indonesia $17M 14% of world imports
- 2 South Korea $13M 11% of world imports
- 3 Malaysia $10M 8.7% of world imports
World total: $116M Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM code for millstones
Brazil classifies millstones under NCM 6804.10.00: HS 6804.10 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about millstones
What is the HS code for Millstones?
The HS code for Millstones is 680410 (Millstones and grindstones; for milling, grinding or pulping). The HS code for millstones and grindstones for milling, grinding, or pulping is 6804.10.
How do I classify Millstones for customs?
Millstones is classified under HS code 680410 — Millstones and grindstones; for milling, grinding or pulping. This is a 6-digit subheading level code.
Are synthetic millstones classified differently than natural ones?
No, both natural stone and agglomerated artificial abrasive millstones are classified under heading 6804, provided they are used for milling, grinding, or pulping.
Which countries are the top exporters of millstones (HS 680410)?
In 2025, the top exporters of HS 680410 (the code used for millstones) in UN Comtrade data were the Philippines ($21M, 20% of world exports), Israel ($15M) and the United States ($14M). World exports came to about $108M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of millstones (HS 680410)?
In 2025, the top importers of HS 680410 (the code used for millstones) in UN Comtrade data were Indonesia ($17M, 14% of world imports), South Korea ($13M) and Malaysia ($10M). World imports came to about $116M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Is the HS code for Millstones the same in all countries?
The base HS code 680410 for Millstones is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for millstones in Brazil?
In Brazil, millstones (HS 680410) is classified under NCM 6804.10.00.