Precision CNC Compressor Housing for Crystal Boule Grinders from Japan
CNC-machined steel housing for compressors powering pneumatic grinding systems that shape semiconductor crystal boules to exact wafer diameters. Classified HTS 8414.90.41.65 under statistical note (a)(ii)(A) for crystal grinders.
Duty Rate — Japan → 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 CNC machining specs showing tolerances for semiconductor flat-grinding interfaces
• Document pressure ratings specific to boule grinding without contaminating crystal surfaces