Music Box Mainspring from China
High-tension steel mainspring barrel assembly that stores energy for continuous music box playback (18-72 notes). Classified under HTS 9209.99.61.00 as core mechanism part for music boxes. Calibrated for 1-3 minute play duration per wind.
Duty Rate — China → United States
20%
Rate breakdown
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 to this subchapter
9903.88.157.5%Except as provided in headings 9903.88.39, 9903.88.42, 9903.88.44, 9903.88.47, 9903.88.49, 9903.88.51, 9903.88.53, 9903.88.55, 9903.88.57, 9903.88.65, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(r) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(s)
Import Tips
• Include torque ratings and play duration specs to distinguish from watch/clock springs
• Oil residue common; ensure proper packaging to prevent mechanism corrosion during transit
• Obtain material safety data for high-carbon steel compliance