High-Purity Copper Balls for Wafer Lapping Machine Thrust Bearings
Ultra-pure copper alloy balls for thrust bearings in wafer lappers that achieve flatness tolerances critical for semiconductor fabrication. These balls are classified under tariff item 8482.91.00 as bearing balls, specifically for use in lapping machine thrust bearings.
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 balls are imported with other bearing parts
Other bearing parts are classified separately.
If the balls are not for bearing applications
Copper articles not for bearing use are classified under copper fasteners.
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
• Confirm the purity and precision of the copper balls for bearing classification
• Ensure the balls meet the tolerance standards of Note 7
• Keep documentation of the end-use in semiconductor fabrication
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