Internal Star Lock Washer #10 from Mexico
Stainless steel washer with inward-facing teeth for secure locking against rotation on softer materials. Falls under HTS 7318.21.00 as a non-threaded steel spring lock washer. Common in electronics and aerospace fasteners.
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
• Document tooth geometry and material compatibility for aerospace approvals
• Use precise quantity declarations; small sizes often undervalued in bulk
• Confirm non-magnetic properties if stainless grade affects end-use certification