AISI 4340 Nickel-Chromium-Moly Round Wire 4mm from Mexico
High-tensile strength round wire of nickel-chromium-molybdenum alloy steel (AISI 4340), 4 mm diameter, for aerospace bolts and gears. Falls under HTS 7229.90.50.51 as other round alloy steel wire ≥1.5 mm, distinct from tool steel or heat-resisting steel definitions. Hot-rolled and coiled for industrial machining.
Duty Rate — Mexico → United States
50%
Rate breakdown
9903.82.0250%Except as provided for in headings 9903.82.14, 9903.85.67 and 9903.85.68, articles of aluminum, of steel or of copper and derivative aluminum or steel articles, as provided for in subdivisions (c)(i)–(v) 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
• Submit chemical analysis certificate confirming it doesn't meet tool steel criteria (note e); measure diameter precisely as statistical suffix depends on it
• Segregate from stainless to prevent Chapter 72 note misapplication