Belleville Copper Disc Spring
Conical disc spring washer of copper for high-load stacking. Spring washer HTS 7415.21.00.00.
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Alternative Classifications
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Import Tips & Compliance
• Load/deflection curves required
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.
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.
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.