Copper Alloy Lock Spring Assembly from Mexico
Phosphor bronze spring pack for tensioning lock tumblers and bolts. Under HTS 8301.60.00.10 as specialized copper alloy parts for base metal locks. Fatigue-resistant for high-cycle operations.
Duty Rate — Mexico → United States
12.8%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Spring rate certifications matching lock manufacturer specs
• Plating analysis confirming corrosion resistance for security
• Avoid 'general springs' declarations triggering 8302