Other
Parts and accessories (other than covers, carrying cases and the like) suitable for use solely or principally with machines of headings 8470 to 8472: > Parts and accessories equally suitable for use with machines of two or more of the headings 8470 to 8472: > Other
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.12, 9903.88.17, 9903.88.20, 9903.88.54, 9903.88.59, 9903.88.61, 9903.88.63, 9903.88.66, 9903.88.67, 9903.88.68, 9903.88.69, or 9903.88.70, articles the product of China, as provided for in U.S. note 20(c) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(d)
Products classified under HTS 8473.50.90.00
Czochralski Crystal Puller Mechanism
This precision-engineered pulling mechanism is a key part of Czochralski crystal growers used to produce monocrystalline silicon boules for semiconductor wafers. It falls under HTS 8473.50.9000 as a part equally suitable for semiconductor manufacturing machines in headings 8470-8472. The component controls the rotation and extraction rate during crystal growth.
Wafer Slicing Diamond Saw Blade
High-precision diamond-impregnated saw blade designed exclusively for slicing semiconductor boules into thin wafers in wafer preparation equipment. Classified under HTS 8473.50.9000 as a part suitable for machines of 8471 used in semiconductor processing. Ensures minimal material loss and precise wafer thickness.
Crystal Boule Grinder Spindle Assembly
Rotating spindle assembly for crystal grinders that shape semiconductor boules to exact wafer diameters and grind orientation flats. Falls under HTS 8473.50.9000 as it works with semiconductor processing machines across 8470-8472 headings. Provides vibration-free precision grinding.
Wafer Lapping Plate
Cast iron or ceramic lapping plate used in wafer grinders/lappers to achieve ultra-flat surfaces on semiconductor wafers before fabrication. HTS 8473.50.9000 classification due to principal use with 8471 semiconductor processing machines. Critical for wafer planarity specifications.
Float Zone Crystal Furnace RF Coil
Radio frequency induction coil for float zone crystal growth furnaces that melt and purify semiconductor material without crucibles. Classifies under HTS 8473.50.9000 as a part for semiconductor machines in 8471. Enables zone refining for ultra-pure silicon.
Wafer Polishing Head Assembly
Multi-head polishing assembly that holds and rotates semiconductor wafers against polishing pads for mirror-finish surfaces. HTS 8473.50.9000 as equally suitable for various 8471 wafer processing machines. Achieves sub-micron surface roughness.
Semiconductor Wafer Chuck
Vacuum or electrostatic chuck that securely holds silicon wafers during grinding, polishing, and inspection in semiconductor equipment. Falls under HTS 8473.50.9000 for use with 8470-8472 machines. Provides particle-free wafer handling.
Crystal Growth Crucible Holder
High-temperature resistant holder for quartz crucibles in Czochralski silicon crystal pullers. HTS 8473.50.9000 classification for semiconductor manufacturing equipment parts. Maintains crucible alignment and temperature uniformity.
Wafer Edge Grinder Collet
Precision collet that grips semiconductor wafers by edge for edge grinding to remove damage layers from slicing. Classifies under HTS 8473.50.9000 as part for wafer preparation machines. Ensures chip-free edge profiles.
Boule Flattening Grinder Wheel
Diamond wheel for grinding flats on semiconductor crystal boules to indicate resistivity and conductivity type. HTS 8473.50.9000 for use with crystal preparation equipment in 8471. Creates precise orientation markers.