Pure Copper Constant Force Springs from Canada
Spiral-wound pure electrolytic copper constant force springs for retractable cords and battery contacts, classified under HTS 7419.80.1600. Provides uniform tension in compact spaces.
Duty Rate — Canada → United States
13%
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
• Confirm copper purity >99% via assay certificates for Chapter 74 entry
• Watch for oxidation; import in nitrogen-sealed packaging
• Distinguish from wire by spring function on entry documents