Incabloc Shock-Protected Hairspring from Japan
A shock-resistant hairspring with Incabloc mounting system for luxury mechanical watches, regulating balance wheel oscillations. Falls under HTS 9114.90.38.00 as specialized 'other' watch springs for precise timekeeping.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Document shock protection patents/trademarks to prove watch-specific engineering, avoiding general parts classification
• Ensure packaging identifies end-use for 'watch movements only' to support chapter 91 over chapter 73/85 alternatives
• Monitor for preferential tariff treatment under US insular possessions rules for watch components (US note b)