A490 Alloy Structural Bolts from China
A490 bolts are quenched and tempered alloy steel structural bolts for high-load applications like bridges and towers, featuring diameters from 1/2 inch (12.7 mm) and above, often shipped with heavy hex nuts. Classified under HTS 7318.15.20.30 for their structural designation and shipment with fasteners.
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
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 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(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Import Tips
• Obtain supplier certifications for alloy composition and heat treatment to avoid misclassification as lower-grade bolts
• Document that items meet AASHTO or ASTM structural standards to support 'structural bolts' declaration
• Beware of quota restrictions on high-strength steel products; pre-validate with CBP rulings