M6 Stainless Steel Split Lock Washer from Mexico
A helical split ring washer made from AISI 304 stainless steel, designed to compress under bolt tension for locking action. It falls under HTS 7318.21.00 as a non-threaded spring washer of steel that prevents fastener loosening due to vibration. Commonly used in automotive and machinery assembly.
Duty Rate — Mexico → United States
15.8%
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
• Verify material certification (e.g
• AISI 304) to confirm steel composition and avoid misclassification as non-ferrous
• Include detailed engineering drawings in documentation to prove non-threaded spring design and locking function
• Watch for undervaluation pitfalls; provide cost breakdowns separating washers from bulk fastener shipments