Incabloc Shock-Protected Hairspring
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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If classified as 'jewels' rather than springs
Synthetic jewels for watch movements have separate subheading 9114.90.55 within 'other' parts.
If bearings integral to spring assembly
Chapter note 1(f) excludes ball bearings from chapter 91, directing to heading 8482.
If plastic-coated versions for general use
Plastic parts of general use (note 1(c)) classify in chapter 39, not watch-specific components.
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Import Tips & Compliance
• 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)
Related Products under HTS 9114.90.38.00
Nivarox Hairspring for Mechanical Watches
A Nivarox alloy hairspring designed for mechanical watch movements, regulating the oscillation of the balance wheel to maintain accurate timekeeping. It falls under HTS 9114.90.38.00 as an 'other' spring specifically for clock or watch use, distinct from general use parts excluded by chapter notes.
Balance Spring for Quartz-Analog Watch Movements
A hairspring component for quartz-regulated watch movements with mechanical display, ensuring precise time intervals as defined in chapter note 3. Classified under HTS 9114.90.38.00 as 'other' watch springs, separate from unassembled chapter 85 parts.
Breguet Overcoil Hairspring
Traditional Breguet-style overcoil hairspring for high-end chronometer movements, improving isochronism in mechanical watches. Classified in HTS 9114.90.38.00 as 'other' precision watch springs per chapter definitions.
Flat Hairspring for Vintage Pocket Watch Restoration
Traditional flat hairspring for restoring antique mechanical pocket watches, fitting movements under 50mm diameter limit. HTS 9114.90.38.00 covers such 'other' springs as clock/watch parts despite restoration context.
Silicon Hairspring for Modern Diver's Watches
Anti-magnetic silicon hairspring for professional diver's watches, offering corrosion resistance and stability. Falls under HTS 9114.90.38.00 as innovative 'other' watch spring technology for timekeeping regulation.
Power Reserve Indicator Mainspring
Extended mainspring barrel for watches with 7+ day power reserve indicators, powering complex mechanical movements. HTS 9114.90.38.00 includes such high-capacity 'other' springs as essential watch parts.