Balance Staff Jewels Pair from Japan
Matched pair of domed synthetic sapphire jewels for watch balance staff pivots, featuring concave polishing for minimal friction. Critical for rate accuracy in mechanical timepieces. Falls under HTS 9114.90.10.00 as these are the most precisely manufactured watch jewels.
Duty Rate — Japan → United States
10%
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
• Measure and document jewel hole radius to ±0.001mm tolerance for classification proof
• Include material hardness certification (Mohs 9) distinguishing from plastic substitutes
• Package individually in jewel paper to prevent pivot hole deformation during shipping