Crystal Boule Grinder Collet Chuck from Canada
Adjustable collet chuck attachment that mounts on crystal grinders (heading 8429 equipment) to securely hold semiconductor boules during diameter grinding and flat notching for wafer preparation. Made of hardened steel or carbide. Classified in 8431.49.9020 as other machinery mounting attachment.
Duty Rate — Canada → United States
25%
Rate breakdown
9903.82.0925%Except as provided for in headings 9903.82.16 and 9903.85.68, articles of copper and derivative aluminum and steel articles, as provided for in subdivisions (c)(vi)–(viii) of U.S. note 16 to this subchapter
9903.03.060%Articles of aluminum, of steel, or of copper or derivative aluminum or steel articles; passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans, and cargo vans) and light trucks; parts of passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans, and cargo vans) and light trucks; medium- and heavy-duty vehicles; parts of medium- and heavy-duty vehicles; wood products; and semiconductor articles, of any country, as provided in subdivision (aa)(v) of U.S. note 2 to this subchapter
Import Tips
• Include grind tolerance specs (±0.01mm) in invoices to prove semiconductor precision
• Pair with boule grinder photos/install diagrams for smooth customs clearance