9114.90.34.00/Glucydur Balance Spring for Chronograph Watches/Japan

Glucydur Balance Spring for Chronograph Watches from Japan

Glucydur alloy balance spring optimized for high-frequency chronograph movements (4Hz operation). Classified in HTS 9114.90.34.00 as a hairspring for watch timekeeping regulation.

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%

Calculate with your customs value Verify classification with AI

Import Tips

• Specify balance wheel material compatibility in technical docs; alloy pairs affect classification

• Frequency certification (beats per hour) proves watch movement application

• Avoid generic 'spring' labeling; use 'hairspring for watch movements' explicitly