Synthetic Diamond Honing Stone from Canada
Segmented stones of agglomerated synthetic diamond for internal honing of cylinders and bores in engine manufacturing. HTS 6804.21.00 covers these hand-sharpening/polishing stones and similar abrasives. Provides consistent surface finishes for automotive and aerospace parts.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Specify grit progression (coarse/medium/fine) and mandrel compatibility in invoices for accurate duty assessment
• Ensure no metal framework inclusion; loose stones classify here vs. complete tools