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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If integrated in complete oscillator systems
Complete balance-hairspring assemblies with jewel bearings classify as machinery appliances.
If sold in bulk for non-specific uses
Unspecified hairsprings without horological declaration may default to other steel articles.
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Import Tips & Compliance
• Cross-reference with ETA/Sellita part numbers in documentation for authenticity verification
• Declare as 'replacement parts' for warranty claims to potentially qualify for lower duties
• Conduct pre-shipment XRF analysis for alloy composition if origin is non-preferred country
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