High-Carbon Lock Wire 1.0mm from China
1.0mm diameter drawn wire of nonalloy steel with 0.7% carbon, used in safety-critical aerospace and automotive locking applications to prevent fastener loosening. HTS 7217.90.50.90 applies to this other high-carbon (>0.6%) nonalloy wire not plated or further worked. Provides superior shear strength for vibration-prone environments.
Duty Rate — China → United States
35%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
9903.91.0125%Effective with respect to entries on or after September 27, 2024, articles the product of China, as provided for in subdivision (b) of U.S. note 31 to this subchapter
Import Tips
• Certify exact carbon analysis and tensile properties (typically 1800-2200 MPa); aerospace specs like MS20995 require traceability
• No surface treatments allowed in this code—declaring coated wire risks 7217.20 duties
• Common issue: incorrect diameter measurement leading to wrong statistical suffix