Float Zone Crystal Grinder Chuck
Vacuum chuck assembly for float zone crystal grinders that shape semiconductor boules to precise wafer diameters while maintaining flat orientation indicators. This accessory for heading 8461 machines is classified in HTS 8466.93.98.85 due to its specialized use in semiconductor material processing. Ensures conductivity type markings remain accurate during grinding.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for tool holders used with heading 8456-8461 metalworking machines
General purpose chucks for milling/grinding metal parts use different statistical suffixes.
If the primary function is vacuum generation rather than work holding
Vacuum pumps and components classify in Chapter 84 under compressors.
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Import Tips & Compliance
• Document vacuum specifications and flatness tolerances proving semiconductor use; include boule diameter compatibility range; ensure material certificates for contamination-free operation
Related Products under HTS 8466.93.98.85
Czochralski Crystal Puller Control Module
Electronic control module specifically designed for regulating temperature and rotation in Czochralski crystal pullers used to grow monocrystalline silicon boules for semiconductor wafers. This part falls under HTS 8466.93.98.85 as a specialized accessory for semiconductor manufacturing machines in heading 8461. It ensures precise control over crystal growth parameters critical for semiconductor production.
Semiconductor Wafer Slicing Saw Spindle Assembly
Precision spindle assembly for inner diameter wafer slicing saws used to cut ultra-thin silicon wafers from monocrystalline boules in semiconductor fabrication. Classified under HTS 8466.93.98.85 as a key component for machines of heading 8461 dedicated to semiconductor wafer preparation. Features diamond-impregnated blade mounting for sub-micron accuracy.
Wafer Lapping Machine Work Holder
Specialized work holder for double-sided lapping machines that simultaneously lap both surfaces of semiconductor wafers to achieve nanometer flatness. Falls under HTS 8466.93.98.85 as an accessory for semiconductor wafer preparation equipment of heading 8461. Features pin-plate carrier system for uniform pressure distribution.
Silicon Boule Grinder Flattening Fixture
Precision fixture for grinding flats on silicon boules to indicate crystal orientation and resistivity type for subsequent wafer slicing. Classified under HTS 8466.93.98.85 as a special attachment for semiconductor crystal processing machines of heading 8461. Ensures repeatable flat positioning critical for wafer fabrication.
Diamond Wafer Polishing Head Assembly
Carrier head assembly with diamond pad retention system for chemical mechanical polishing (CMP) of semiconductor wafers. This part for heading 8461 polishing machines is classified in HTS 8466.93.98.85 due to its semiconductor-specific design tolerances. Maintains uniform pressure across 300mm wafers during planarization.
Crystal Grower RF Heating Coil Assembly
Radio frequency induction heating coil specifically engineered for float zone crystal growers producing semiconductor-grade silicon. Falls under HTS 8466.93.98.85 as a principal part for heading 8461 semiconductor processing machines. Provides zone-refined melting without crucible contamination.