Glucydur Balance Spring for Chronograph Watches from Canada
Glucydur alloy balance spring optimized for high-frequency chronograph movements (4Hz operation). Classified in HTS 9114.90.34.00 as a hairspring for watch timekeeping regulation.
Duty Rate — Canada → United States
17.3%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Specify balance wheel material compatibility in technical docs; alloy pairs affect classification
• Frequency certification (beats per hour) proves watch movement application
• Avoid generic 'spring' labeling; use 'hairspring for watch movements' explicitly