Incabloc Shockproof Hairspring
An Incabloc system hairspring with integrated shock protection for luxury mechanical watch movements, made from tempered steel wire. Classified under HTS 7320.90.1000 due to its specific role as a hairspring in horology, derived from iron/steel wire.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If helical coil springs without horological function
Plain helical springs not specifically hairsprings for watches classify under coil spring heading.
If imported mounted in balance cock assemblies
When hairspring is pre-mounted in complete regulator assemblies, it becomes a clock/watch part under 9114.
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Import Tips & Compliance
• Provide movement compatibility diagrams and alloy specs to customs for hairspring verification
• Avoid bundling with collets or studs, as sets may shift to Chapter 91 classification
• Use ISO 9001 certified suppliers to ensure traceability for anti-dumping scrutiny on steel products
Related Products under HTS 7320.90.10.00
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A Nivarox alloy hairspring designed for high-precision mechanical watches, regulating the oscillation of the balance wheel to ensure accurate timekeeping. It falls under HTS 7320.90.1000 as a hairspring made of iron or steel wire with cross-section under 16mm, specifically for horological use.
Brelet Breguet Overcoil Hairspring
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Glucydur Hairspring for ETA Movements
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Silicon-Coated Steel Hairspring
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Precision Flat Hairspring for Pocket Watches
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Anti-Shock Breguet Hairspring
Breguet terminal curve hairspring with KIF anti-shock mounting pins for robust mechanical chronographs. Meets HTS 7320.90.1000 criteria as specialized steel wire hairspring for timepiece oscillation control.