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.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If unassembled components for general electronic timepieces
Chapter note 1(g) places unassembled chapter 85 articles not principally for watch movements outside this chapter.
If made of precious metal or clad with precious metal
Precious metal watch parts generally fall under heading 7115 per chapter note 1(c).
If for industrial precision machinery, not consumer watches
End-use determines classification; non-watch springs classify as machinery parts in chapter 84/85.
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Import Tips & Compliance
• Provide movement diagrams showing integration with balance wheel/hairspring system to confirm chapter 91 applicability
• Avoid bulk packaging that suggests parts for non-watch assembly; retail-ready packaging supports 'watch parts' status
• Declare if springs exceed 50mm dimensions, risking exclusion from 'watch movement' definition in note 3
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.
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.
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.