Balance Spring Assembly for Dive Watches
Pre-assembled balance spring with collet and stud for professional dive watches, rated to 300m water resistance. Falls under HTS 9114.90.34.00 as watch-specific hairsprings per chapter 91 scope.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for clock movements
Different subheading for larger clock dimensions vs compact watch specifications.
If escapement-free timing devices
Note 1(e) excludes articles of heading 8412 designed without escapement mechanisms.
If precision measuring instruments
Note 4 excludes dual-use parts from clocks/watches to measuring instruments.
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Import Tips & Compliance
• Certify pressure resistance specs if claiming dive watch use; supports watch-specific classification
• Separate from shock protection systems to maintain parts vs complete module status
• Retain supplier invoices showing purchase for named watch brands (Rolex, Omega)
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