Copper Spring Lock Washer from Mexico
A split-ring spring washer made of copper alloy that provides locking action by exerting spring tension. Classified under HTS 7415.21.00.00 as a spring washer of copper, unthreaded for vibration-resistant assemblies. Meets definitions for copper articles in Chapter 74.
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
• Provide alloy composition certificate distinguishing from brass under subheading note (a)
• Label as 'spring washer' explicitly; generic terms risk scrutiny as plain washers
• Ensure no threading; even partial threads reclassify to 7415.31