Internal Tooth Copper Washer
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.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the washer has a threaded bore
Threaded washers are classified under a different item.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• 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
Related Products under Tariff item 7415.21.00
1/4 Inch Copper Beveled Washer
A beveled copper washer designed for 1/4-inch bolts, providing angular load distribution in woodworking or decking applications. It is unthreaded and made of pure copper, which places it under tariff item 7415.21.00 as a washer of copper. The beveled shape does not alter its classification as a washer.
Annealed Copper Spring Washer
A soft annealed copper single-coil spring washer used in delicate assemblies where gentle tension is required. The annealing process makes it a spring washer of copper, unthreaded, fitting tariff item 7415.21.00. Its soft temper distinguishes it from harder washers but does not affect classification.
Belleville Copper Disc Spring
A conical disc spring washer made of copper, designed for high-load stacking applications. It functions as a spring washer and is unthreaded, placing it under tariff item 7415.21.00. The conical shape is a recognized washer form.
Copper Fender Washer 3/8 Inch
A large outer diameter copper fender washer for 3/8-inch bolts, used in roofing and soft material fastening to spread load. It is unthreaded and made of copper, fitting tariff item 7415.21.00. The fender design is a type of flat washer.
Copper Finishing Washer
A countersunk copper washer designed for flush bolting in applications where aesthetics matter. It is unthreaded and made of copper, placing it under tariff item 7415.21.00. The countersunk shape is a common washer variant.
Copper Marine Grade Washer
A corrosion-resistant pure copper flat washer for marine hardware applications. It is unthreaded and made of copper, fitting tariff item 7415.21.00. The marine-grade designation refers to its corrosion resistance, not a different alloy.