Mainspring for Automatic Skeleton Watches from Mexico
A power reserve mainspring for self-winding automatic watch movements, providing energy to the gear train. It qualifies under HTS 9114.90.38.00 as an 'other' clock/watch spring, explicitly including clock/watch springs despite general exclusion notes.
Duty Rate — Mexico → United States
14.2%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Include barrel assembly diagrams if imported with housing to distinguish from general metal parts in section XV
• Certify compatibility only with watch movements meeting size limits (note 3) to prevent chapter 85 misclassification