Monocrystalline Boule Flattener Fixture from Mexico
Custom fixture for grinding orientation flats on silicon/gallium arsenide boules to denote crystal plane and doping type. Used solely with crystal grinders of semiconductor machinery heading 8430. 8431.49.90.
Duty Rate — Mexico → United States
25%
Rate breakdown
9903.82.0925%Except as provided for in headings 9903.82.16, 9903.82.20–9903.82.26 and 9903.85.68, articles of copper and derivative aluminum and steel articles, as provided for in subdivisions (c)(vi)–(viii) and (xi) of U.S. note 16 to this subchapter
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Include flat length/angle specs per SEMI standards (M1-0302)
• Documentation must show semiconductor boule exclusivity
• Avoid generic tooling classification