Copper Spring Lock Washer
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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If steel with copper electroplating
Predominant steel base material governs classification in Chapter 73.
If made of brass (copper-zinc alloy)
Brass washers specifically covered under 7415.22 per Chapter 74 subheading note (a).
If for use in base metal mountings or fittings
End-use in hardware assemblies may shift to Chapter 83.
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Import Tips & Compliance
• 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
Related Products under HTS 7415.21.00.00
M6 Copper Flat Washer
A flat, circular washer made from pure copper, designed for M6 bolts to distribute load and prevent surface damage. It falls under HTS 7415.21.00.00 as an unthreaded copper washer used in general fastening applications. Complies with Chapter 74 for copper articles excluding threaded fasteners.
1/4 Inch Copper Beveled Washer
Beveled copper washer for 1/4-inch bolts, providing angular load distribution in woodworking or decking. HTS 7415.21.00.00 covers this unthreaded copper washer as a similar article. Pure copper construction aligns with Chapter 74 exclusions.
M8 Copper Split Lock Washer
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.
Copper Fender Washer 3/8 Inch
Large outer diameter copper fender washer for 3/8-inch bolts, ideal for roofing and soft material fastening. HTS 7415.21.00.00 includes such unthreaded copper washers. Distinguished from threaded by heading hierarchy.
Internal Tooth Copper Washer
Copper washer with internal teeth that bite into surfaces for lockwashers in electrical panels. Unthreaded design places it in HTS 7415.21.00.00 for copper spring washers. Chapter notes confirm copper base.
External Star Copper Lock Washer
Star-pattern external tooth lock washer of copper for high-vibration automotive use. Classifies as spring washer under HTS 7415.21.00.00, unthreaded copper article. Excludes sets per GRI 3 rules.