Float Zone Crystal Grinder Fixture

Custom fixture/holder for securing crystals during grinding in float zone semiconductor production equipment. Designed for machinery grinding solid mineral substances, falling under parts of HTS 8474.90.00.90.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳ChinaFree+35.0%35%
🇲🇽MexicoFree+10.0%10%
🇨🇦CanadaFree+10.0%10%
🇩🇪GermanyFree+10.0%10%
🇯🇵JapanFree+10.0%10%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

8466.94.85Higher: 39.7% vs 35%

If fixture for precision machine tools rather than bulk mineral processing

Machine tool fixtures/workpiece holders go to 8466 for semiconductor working tools.

8479.90Lower: 10% vs 35%

If for fixtures of unclassified semiconductor machines

Residual parts provision captures items not fitting specific machinery chapters.

Not sure which classification is right?

Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.

Import Tips & Compliance

Provide photos/blueprints showing machine integration to avoid 'general fixture' classification

Declare as 'solely for 8474 equipment' on commercial invoice

Related Products under HTS 8474.90.00.90

Silicon Crystal Boule Grinder

Industrial grinder designed to precisely grind silicon crystal boules to the required diameter for semiconductor wafer production, including flats indicating conductivity type and resistivity. Classified under HTS 8474.90.00.90 as grinding machinery for mineral substances in solid form, specifically for processing semiconductor materials like silicon. This equipment falls within the statistical notes for semiconductor manufacturing wafer preparation.

Wafer Slicing Diamond Saw Blade

High-precision diamond-impregnated saw blade used in wafer slicing saws to cut thin semiconductor wafers from monocrystalline silicon boules. As a replaceable part for machinery grinding and slicing solid mineral substances (silicon crystals), it is classified under HTS 8474.90.00.90 parts thereof.

Semiconductor Wafer Lapping Plate

Cast iron or ceramic lapping plate used in wafer grinders/lappers to achieve flatness tolerances on silicon wafers prior to fabrication. This part for grinding machinery of solid mineral substances (semiconductor wafers) is covered by HTS 8474.90.00.90.

Crystal Puller Shaft Assembly

Rotating shaft and support assembly part for Czochralski crystal pullers used to grow monocrystalline silicon boules from molten silicon. As a part of machinery processing mineral substances into semiconductor forms, classified under HTS 8474.90.00.90.

Wafer Grinder Spindle

Precision spindle assembly for high-speed rotation in semiconductor wafer grinders, ensuring accurate grinding of wafer surfaces to tight tolerances. Part of grinding machinery for solid mineral semiconductor wafers under HTS 8474.90.00.90.

Silicon Wafer Edge Polisher Drum

Rotating drum component in wafer polishing equipment for smoothing edges of semiconductor wafers post-grinding. As a part for grinding/polishing solid mineral wafers, classified in HTS 8474.90.00.90.