Crystal Boule Grinder Forged Steel Spindle from Mexico
This forged steel spindle is used in crystal grinders for semiconductor boules per statistical note (a)(ii)(A), part of heading 8426 wafer preparation machinery. It provides rotational precision for grinding boule diameter and flats indicating conductivity. HTS 8431.49.90.81 covers it as a steel forging specific to such equipment.
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 of aluminum, of steel or of copper or derivative aluminum or steel articles; passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans and cargo vans) and light trucks; parts of passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans and cargo vans) and light trucks; medium- and heavy-duty vehicles; parts of medium- and heavy-duty vehicles; wood products; patented pharmaceutical articles; and semiconductor articles, as provided in subdivision (f) of U.S. note 52 to this subchapter
Import Tips
• Include resistivity flat grinding tolerance specs to tie to statistical note requirements
• Certify forging heat treatment for semiconductor cleanroom compatibility to support classification
• Pair with boule grinder import docs for set classification if applicable, avoiding individual part scrutiny