Internal Tooth Copper Washer from Mexico
A copper washer with internal teeth that bite into surfaces for lockwasher applications in electrical panels. It is unthreaded and classified under tariff item 7415.21.00 as a spring washer of copper. The internal teeth provide locking action.
Duty Rate — Mexico → Canada
0%
Import Tips
• Verify the washer is not plated with another metal that could change classification
• Provide electrical conductivity data if requested by CBSA
• Check if the washers are for electrical use, which may have safety standards