M8 Copper Split Lock Washer from Mexico
Helically split copper lock washer for M8 metric fasteners, preventing loosening under vibration. Fits HTS 7415.21.00.00 for unthreaded copper spring washers. Excludes threaded articles per heading structure.
Duty Rate — Mexico → United States
53%
Rate breakdown
9903.82.0250%Except as provided for in headings 9903.82.14, 9903.85.67 and 9903.85.68, articles of aluminum, of steel or of copper and derivative aluminum or steel articles, as provided for in subdivisions (c)(i)–(v) of U.S. note 16 to this subchapter
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Include engineering drawings showing split design to confirm spring washer status
• Certify no zinc > tin threshold to avoid bronze reclassification
• Declare country of smelt/refine for Section XV origin rules