Semiconductor Wafer Lapping Plate
A cast iron or ceramic lapping plate used in wafer grinders and lapping machines to achieve precise flatness and dimensional tolerances on semiconductor wafers before fabrication. It is classified under this tariff item as a part of machinery for finishing textile fabrics, per the statistical notes for semiconductor wafer preparation equipment.
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 plate is a part of a machine tool of heading 84.56
Parts of machine tools are classified in heading 84.66, not in Chapter 84's textile machinery headings.
If the plate is made of ceramic abrasives
Ceramic abrasive articles are classified in Chapter 68, excluded from Chapter 84 by Note 1(a).
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
• Classify the lapping plate as a part of wafer preparation machinery under 8451.90.90, not as a machine tool part
• Keep documentation showing the plate is used solely for semiconductor wafer lapping to support the classification
• Check if the MFN duty rate or a preferential rate under a trade agreement applies to your shipment
Related Products under Tariff item 8451.90.90
Amana Washer Inlet Valve
A dual solenoid water inlet valve for Amana household washing machines, controlling water flow for textile cleaning. It is a critical hydraulic part for laundry equipment, classified under this tariff item as a part of washing machines of heading 84.50.
Bosch Dry-Clean Door Latch Assembly
A safety door interlock latch for Bosch compact dry-cleaning units handling made-up textiles, preventing operation without secure door closure. It is a part of dry-cleaning machinery, classified under this tariff item for machines of heading 84.51.
Crystal Boule Flattener Attachment
A precision flattener tool attachment for grinding flats on semiconductor crystal boules to indicate resistivity and dopant type. This product is a part of machinery used in semiconductor manufacturing, which falls under heading 84.86, not under heading 84.51 for textile machinery. Therefore, it does not belong under tariff item 8451.90.90.
Crystal Grinder for Semiconductor Boules
A precision crystal grinder for grinding semiconductor crystal boules to exact diameters and flats. This machinery is used in semiconductor manufacturing and is classified under heading 84.86, not under heading 84.51 for textile machinery. It is not a part of textile drying or finishing machines, so it does not fall under tariff item 8451.90.90.
Crystal Ingot Notcher Blade
An ultra-thin diamond notcher blade for creating orientation notches on semiconductor crystal ingots before slicing. This is a part of semiconductor manufacturing equipment under heading 84.86, not textile machinery. It does not belong under tariff item 8451.90.90.
Czochralski Crystal Puller Heating Element
A graphite or molybdenum heating element part for Czochralski crystal growers producing monocrystalline silicon boules. This is a part of semiconductor manufacturing equipment under heading 84.86, not textile machinery. It is not a part of textile drying or finishing machines, so it does not fall under tariff item 8451.90.90.