Import duty on Millstones, grindstones, grinding wheels, etc without frameworks, for grinding, sharpening, polishing, etc and parts thereof, natural stone, agglomerated natural or artificial abrasives or of ceramics (HS 6804)

Heading 6804 covers 5 tariff lines in LoadLoom's table; 4 of them clear duty-free under USMCA for goods made in Canada, the US or Mexico. Published US and Canadian rates below, verified October 2026. Pick the line that matches your goods for the worked example and border steps.

HS code	Goods	US duty	Canada duty	USMCA
6804.10	Millstones and grindstones; for milling, grinding or pulping	Free	Free	Free with certificate
6804.21	Millstones, grindstones, grinding wheels and the like; of agglomerated synthetic or natural diamond	Free	Free	Free with certificate
6804.22	Millstones, grindstones, grinding wheels and the like; of other agglomerated abrasives or of ceramics	Free	Free	Not eligible
6804.23	Millstones, grindstones, grinding wheels and the like; of natural stone	Free	Free	Free with certificate
6804.30	Stones; hand sharpening or polishing stones, of natural stone, agglomerated natural or artificial abrasives or ceramics, with or without parts of other materials	Free	Free	Free with certificate

This page is a free reference for shippers, not a customs ruling. Final classification and duty are determined by the licensed customs broker at entry, and government amounts are always billed at actual. Rates change with each tariff edition and trade action.

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Chapter 68: Stone, plaster, cement, asbestos, mica or similar materials; articles thereof · Every chapter