AISI 9310 Gear-Quality Alloy Wire 3.2mm from Mexico
Case-hardening alloy steel wire (AISI 9310) with 3.2 mm round diameter for precision gears in aviation and racing. HTS 7229.90.50.51 applies to this other alloy steel wire ≥1.5 mm, not ball-bearing steel per note (h). Clean surface finish for cold heading into fasteners.
Duty Rate — Mexico → United States
10%
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
Import Tips
• Provide spectrographic analysis excluding ball-bearing steel elements (note h); measure diameter at multiple points for consistency
• Avoid coiling too tightly to prevent ovality misclassification