Crystal Boule Grinder Chuck
Precision vacuum chuck that holds crystal boules during diameter grinding to wafer specifications. Falls under HTS 8486.90.00.00 as part of crystal grinders per statistical note for boule preparation.
Import Duty Rates by Country of Origin
| Origin Country | MFN Rate | Ch.99 Surcharges | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | +25.0% | 25% |
| 🇲🇽Mexico | Free | — | Free |
| 🇨🇦Canada | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If used on universal grinding machines
Parts of general-purpose grinding machines without semiconductor specificity fall under Chapter 84 metalworking machinery.
If imported with independent vacuum pump system
Vacuum pumps and parts classify under 8414 regardless of end use.
Not sure which classification is right?
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Import Tips & Compliance
• Ensure vacuum port specifications match OEM grinders; require surface flatness certification; common error is classifying under general machine chucks 8466
Related Products under HTS 8486.90.00.00
Czochralski Crystal Puller Heater Element
A graphite or molybdenum heater element used in Czochralski crystal growers to melt polysilicon for producing monocrystalline semiconductor boules. It falls under HTS 8486.90.00.00 as a part of semiconductor boule manufacturing equipment specified in the statistical note for crystal growers and pullers.
Silicon Wafer Slicing Diamond Wire
A diamond-impregnated wire used in multi-wire saws to slice semiconductor boules into thin wafers, as specified in the statistical note under wafer slicing saws. Classified under HTS 8486.90.00.00 as an essential accessory for wafer preparation equipment.
Wafer Grinder Lapping Plate
A precision copper or tin lapping plate used in wafer grinders to achieve flatness tolerances on semiconductor wafers during preparation for fabrication. Covered under HTS 8486.90.00.00 per statistical note for wafer grinders, lappers, and polishers.
Float Zone Crystal Grower RF Coil
Radio frequency induction coil for float zone crystal pullers that melts a narrow zone of polysilicon rod to produce high-purity monocrystalline silicon boules. HTS 8486.90.00.00 applies as a part of crystal growers per statistical note.
Semiconductor Wafer Polishing Pad
Polyurethane polishing pad engineered for chemical mechanical planarization (CMP) of semiconductor wafers to achieve mirror surface finish. Classified under HTS 8486.90.00.00 as an accessory for wafer polishers in the statistical note.
Wafer Edge Profiling Tool
Diamond wheel tool for creating beveled edges on semiconductor wafers to prevent chipping during handling and processing. HTS 8486.90.00.00 as accessory for wafer preparation equipment.