Czochralski Crystal Puller Fixture
Custom fixture for holding seed crystals and stabilizing growth chambers in Czochralski method machines that produce monocrystalline silicon boules. Essential work holder for precise control during semiconductor crystal growth under heading 8461. Falls under 8466.20.8040 as a specialized jig for semiconductor equipment.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported as bulk refractory components
Individual ceramic or graphite holder materials classify by composition in Chapter 69, not as finished fixtures.
If for furnace heating elements
Fixtures integral to heating chambers in crystal growth furnaces fall under laboratory furnace parts.
If basic self-opening work holders
Simpler clamping mechanisms without semiconductor specificity classify as standard work holders.
Not sure which classification is right?
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Import Tips & Compliance
• Submit process flow diagrams showing integration with crystal grower (8461) to confirm principal use
• Declare material compatibility (e.g
• quartz, graphite) to avoid hazardous material scrutiny
• Watch for anti-dumping duties on precision fixtures from certain Asian manufacturers
Related Products under HTS 8466.20.80.40
Semiconductor Wafer Grinding Jig
Precision jig designed to securely hold semiconductor crystal boules during grinding to exact diameters for wafer production. It ensures alignment and stability for machines in headings 8456-8465 used in semiconductor manufacturing. Classified under 8466.20.8040 as a work holder jig for such specialized equipment.
Wafer Slicing Saw Alignment Jig
Jig that precisely aligns semiconductor boules in wafer slicing saws (heading 8460) to ensure parallel cuts for uniform wafer thickness from monocrystalline material. Critical work holder for maintaining tolerances in semiconductor wafer preparation. HTS 8466.20.8040 for such specialized fixtures.
Float Zone Crystal Processing Fixture
Fixture securing semiconductor crystals during float zone purification process in specialized zone refining machines (8456-8465). Maintains rotation and positional accuracy for ultra-pure silicon production. Classified as jig/fixture under 8466.20.8040 for semiconductor work holders.
Semiconductor Wafer Lapping Jig
Multi-wafer carrier jig for simultaneous lapping of semiconductor wafers to achieve flatness tolerances critical for device fabrication. Used exclusively with lapping/polishing machines of heading 8460. HTS 8466.20.8040 as specialized work holder for semiconductor processing.